Could not deliver #4.4.7

shivi · Joined: 06 Aug 2007 Posts: 3

Hello there,
I have a exchange 2000 Sp3+ rollup September on windows 2000 SP4.
Since of late, i've been getting a lot of undelivered emails to most of the
common emails destination
domains like hotmail and yahoo.
The mail is sent but gets returend with,

Could not deliver the message in the time limit specified. Please
retry or contact your administrator.

When i checked my message queue i see thousands of domains with most of them
with the right mark sign and
some with retry sign.

It seems like the messages in the queue are not moving. I also dont get any
related error messages on the event log.

can some one shed me some light on this regard ?

Thanks
Shiv

Archived from group: microsoft>public>exchange2000>connectivity

Jenny Frye [MSFT] · Joined: 05 Aug 2007 Posts: 3

Shivi,

Your server may be experiencing the problem described in this article:

The Remote Simple Mail Transfer Protocol Service Rejected AUTH Negotiation
http://support.microsoft.com/default.aspx?scid=kb;en-us;329636

If this doesn't solve the problem, you can use Diagnostic Logging to
determine the root of a transport issue. To enable Diagnostic Logging on the
MSExchangeTransport service:

1. Start Exchange System Manager.
2. Navigate to the server object.
3. Right-click , and then click Properties.
4. Click the Diagnostic Logging tab.
5. Under Services, click MSExchangeTransport.
6. Under Categories, set the SMTP Protocol Logging Level to maximum.
7. Force a connection for the queue that's in a retry state (restarting
SMTP service will accomplish this, too) so the delivery will be attempted
again.
8. Check the application event log to see if additional events are logged
that might explain the problem.

If you are familiar with netmon, you could also try using it to troubleshoot
the problem.

--
Jenny Frye
Microsoft PSS

This posting is provided 'AS IS' with no warranties and confers no rights.
Please do not send email directly to this alias. This alias is for
newsgroup purposes only.

dummy · Joined: 06 Aug 2007 Posts: 1

Hi Jenny,
Thanks for your response.
I've never experienced such a peculier problem with exchange 2000.

I checked for the article, but it doesnt relate to my problem.
I enabled everything under the MSExchangeTransport service in Diagnostic
Login,
but dont see any events which helps my problem.

Still i got thousands of queues piled up on the server. Strange thing is,
incoming mail works fine.

Today when i checked the queue, I see,
For Hotmail.com - The connection was dropped by the remote host.
For Yahoo.com - The status is Ok, but i've got some 3500 emails queued up
and it doesnt move.
And some domains with 1 or 2 emails left on the queue and many with no
emails at all and
having the queue active. (doesnt close it for some reason!!)

This is quite strange and all of this happend without doing any changes to
the setup.
I did install the September security rollup after getting this problem but
had no joy.

Is there anything else that i can do to diagnost the issue.

Thank You
Shivi

"Jenny Frye [MSFT]" wrote in message@TK2MSFTNGP11.phx.gbl...
> Shivi,
>
> Your server may be experiencing the problem described in this article:
>
> The Remote Simple Mail Transfer Protocol Service Rejected AUTH Negotiation
> http://support.microsoft.com/default.aspx?scid=kb;en-us;329636
>
> If this doesn't solve the problem, you can use Diagnostic Logging to
> determine the root of a transport issue. To enable Diagnostic Logging on
the
> MSExchangeTransport service:
>
> 1. Start Exchange System Manager.
> 2. Navigate to the server object.
> 3. Right-click , and then click Properties.
> 4. Click the Diagnostic Logging tab.
> 5. Under Services, click MSExchangeTransport.
> 6. Under Categories, set the SMTP Protocol Logging Level to maximum.
> 7. Force a connection for the queue that's in a retry state (restarting
> SMTP service will accomplish this, too) so the delivery will be attempted
> again.
> 8. Check the application event log to see if additional events are logged
> that might explain the problem.
>
> If you are familiar with netmon, you could also try using it to
troubleshoot
> the problem.
>
> --
> Jenny Frye
> Microsoft PSS
>
> This posting is provided 'AS IS' with no warranties and confers no rights.
> Please do not send email directly to this alias. This alias is for
> newsgroup purposes only.
>
>

niki · Joined: 06 Aug 2007 Posts: 1

I have the exact same issue. Pls let me know what you find
out. Thx.

>-----Original Message-----
>Hello there,
> I have a exchange 2000 Sp3+ rollup September on
windows 2000 SP4.
>Since of late, i've been getting a lot of undelivered
emails to most of the
>common emails destination
>domains like hotmail and yahoo.
>The mail is sent but gets returend with,
>
> Could not deliver the message in the time limit
specified. Please
>retry or contact your administrator.
>
>
>When i checked my message queue i see thousands of
domains with most of them
>with the right mark sign and
>some with retry sign.
>
>It seems like the messages in the queue are not moving. I
also dont get any
>related error messages on the event log.
>
>
>can some one shed me some light on this regard ?
>
>Thanks
>Shiv
>
>
>
>.
>

Eddie Harris · Joined: 05 Aug 2007 Posts: 2

Do you have GFI mail essentials installed also ?

"dummy" wrote in message@tk2msftngp13.phx.gbl...
> Hi Jenny,
> Thanks for your response.
> I've never experienced such a peculier problem with exchange 2000.
>
> I checked for the article, but it doesnt relate to my problem.
> I enabled everything under the MSExchangeTransport service in Diagnostic
> Login,
> but dont see any events which helps my problem.
>
> Still i got thousands of queues piled up on the server. Strange thing is,
> incoming mail works fine.
>
> Today when i checked the queue, I see,
> For Hotmail.com - The connection was dropped by the remote host.
> For Yahoo.com - The status is Ok, but i've got some 3500 emails queued up
> and it doesnt move.
> And some domains with 1 or 2 emails left on the queue and many with no
> emails at all and
> having the queue active. (doesnt close it for some reason!!)
>
> This is quite strange and all of this happend without doing any changes to
> the setup.
> I did install the September security rollup after getting this problem but
> had no joy.
>
> Is there anything else that i can do to diagnost the issue.
>
> Thank You
> Shivi
>
>
> "Jenny Frye [MSFT]" wrote in message
> @TK2MSFTNGP11.phx.gbl...
> > Shivi,
> >
> > Your server may be experiencing the problem described in this article:
> >
> > The Remote Simple Mail Transfer Protocol Service Rejected AUTH
Negotiation
> > http://support.microsoft.com/default.aspx?scid=kb;en-us;329636
> >
> > If this doesn't solve the problem, you can use Diagnostic Logging to
> > determine the root of a transport issue. To enable Diagnostic Logging on
> the
> > MSExchangeTransport service:
> >
> > 1. Start Exchange System Manager.
> > 2. Navigate to the server object.
> > 3. Right-click , and then click Properties.
> > 4. Click the Diagnostic Logging tab.
> > 5. Under Services, click MSExchangeTransport.
> > 6. Under Categories, set the SMTP Protocol Logging Level to maximum.
> > 7. Force a connection for the queue that's in a retry state (restarting
> > SMTP service will accomplish this, too) so the delivery will be
attempted
> > again.
> > 8. Check the application event log to see if additional events are
logged
> > that might explain the problem.
> >
> > If you are familiar with netmon, you could also try using it to
> troubleshoot
> > the problem.
> >
> > --
> > Jenny Frye
> > Microsoft PSS
> >
> > This posting is provided 'AS IS' with no warranties and confers no
rights.
> > Please do not send email directly to this alias. This alias is for
> > newsgroup purposes only.
> >
> >
>
>

shivi · Joined: 06 Aug 2007 Posts: 3

Hi Eddie,
I dont have any kind of guard software installed on the server. And i am
looking for one.
I tried MAPI LAB Mail storage guard, though its the exact product i am
looking for, its not
getting installed properly on my system.

Thanks
Shivi

Shivanthan Balendra Network Administrator Arabian Network Information
Services W.L.L., P.O.Box 10141, Manama, Bahrain. Tel Off: 973-882516 Fax
Off: 973-683509 Email: shivi@arabian.net Web : www.arabian.net
"Eddie Harris" wrote in message@TK2MSFTNGP09.phx.gbl...
> Do you have GFI mail essentials installed also ?
>
> "dummy" wrote in message
> @tk2msftngp13.phx.gbl...
> > Hi Jenny,
> > Thanks for your response.
> > I've never experienced such a peculier problem with exchange 2000.
> >
> > I checked for the article, but it doesnt relate to my problem.
> > I enabled everything under the MSExchangeTransport service in Diagnostic
> > Login,
> > but dont see any events which helps my problem.
> >
> > Still i got thousands of queues piled up on the server. Strange thing
is,
> > incoming mail works fine.
> >
> > Today when i checked the queue, I see,
> > For Hotmail.com - The connection was dropped by the remote host.
> > For Yahoo.com - The status is Ok, but i've got some 3500 emails queued
up
> > and it doesnt move.
> > And some domains with 1 or 2 emails left on the queue and many with no
> > emails at all and
> > having the queue active. (doesnt close it for some reason!!)
> >
> > This is quite strange and all of this happend without doing any changes
to
> > the setup.
> > I did install the September security rollup after getting this problem
but
> > had no joy.
> >
> > Is there anything else that i can do to diagnost the issue.
> >
> > Thank You
> > Shivi
> >
> >
> > "Jenny Frye [MSFT]" wrote in message
> > @TK2MSFTNGP11.phx.gbl...
> > > Shivi,
> > >
> > > Your server may be experiencing the problem described in this article:
> > >
> > > The Remote Simple Mail Transfer Protocol Service Rejected AUTH
> Negotiation
> > > http://support.microsoft.com/default.aspx?scid=kb;en-us;329636
> > >
> > > If this doesn't solve the problem, you can use Diagnostic Logging to
> > > determine the root of a transport issue. To enable Diagnostic Logging
on
> > the
> > > MSExchangeTransport service:
> > >
> > > 1. Start Exchange System Manager.
> > > 2. Navigate to the server object.
> > > 3. Right-click , and then click Properties.
> > > 4. Click the Diagnostic Logging tab.
> > > 5. Under Services, click MSExchangeTransport.
> > > 6. Under Categories, set the SMTP Protocol Logging Level to maximum.
> > > 7. Force a connection for the queue that's in a retry state
(restarting
> > > SMTP service will accomplish this, too) so the delivery will be
> attempted
> > > again.
> > > 8. Check the application event log to see if additional events are
> logged
> > > that might explain the problem.
> > >
> > > If you are familiar with netmon, you could also try using it to
> > troubleshoot
> > > the problem.
> > >
> > > --
> > > Jenny Frye
> > > Microsoft PSS
> > >
> > > This posting is provided 'AS IS' with no warranties and confers no
> rights.
> > > Please do not send email directly to this alias. This alias is for
> > > newsgroup purposes only.
> > >
> > >
> >
> >
>
>

shivi · Joined: 06 Aug 2007 Posts: 3

Hi..
I found the cause of the problem. (I think)
My server is receiving a lot of Spam to non existing email ids and
eventually
trying to send an NDR, where are the source address is also invalid.
This is getting piled up on the queues and slowing down the legitimate mail
delivery.

Now..need a solution.
Why is Microsoft exchange Exchange server so lazy to check the existence of
the email ID before
accepting any emails for the local users. ??

Shivi

Shivanthan Balendra Network Administrator Arabian Network Information
Services W.L.L., P.O.Box 10141, Manama, Bahrain. Tel Off: 973-882516 Fax
Off: 973-683509 Email: shivi@arabian.net Web : www.arabian.net
"shivi" wrote in message
news:#WqYEKpeDHA.632@TK2MSFTNGP10.phx.gbl...
> Hi Eddie,
> I dont have any kind of guard software installed on the server. And i am
> looking for one.
> I tried MAPI LAB Mail storage guard, though its the exact product i am
> looking for, its not
> getting installed properly on my system.
>
> Thanks
> Shivi
>
>
> Shivanthan Balendra Network Administrator Arabian Network Information
> Services W.L.L., P.O.Box 10141, Manama, Bahrain. Tel Off: 973-882516 Fax
> Off: 973-683509 Email: shivi@arabian.net Web : www.arabian.net
> "Eddie Harris" wrote in message
> @TK2MSFTNGP09.phx.gbl...
> > Do you have GFI mail essentials installed also ?
> >
> > "dummy" wrote in message
> > @tk2msftngp13.phx.gbl...
> > > Hi Jenny,
> > > Thanks for your response.
> > > I've never experienced such a peculier problem with exchange 2000.
> > >
> > > I checked for the article, but it doesnt relate to my problem.
> > > I enabled everything under the MSExchangeTransport service in
Diagnostic
> > > Login,
> > > but dont see any events which helps my problem.
> > >
> > > Still i got thousands of queues piled up on the server. Strange thing
> is,
> > > incoming mail works fine.
> > >
> > > Today when i checked the queue, I see,
> > > For Hotmail.com - The connection was dropped by the remote host.
> > > For Yahoo.com - The status is Ok, but i've got some 3500 emails queued
> up
> > > and it doesnt move.
> > > And some domains with 1 or 2 emails left on the queue and many with no
> > > emails at all and
> > > having the queue active. (doesnt close it for some reason!!)
> > >
> > > This is quite strange and all of this happend without doing any
changes
> to
> > > the setup.
> > > I did install the September security rollup after getting this problem
> but
> > > had no joy.
> > >
> > > Is there anything else that i can do to diagnost the issue.
> > >
> > > Thank You
> > > Shivi
> > >
> > >
> > > "Jenny Frye [MSFT]" wrote in message
> > > @TK2MSFTNGP11.phx.gbl...
> > > > Shivi,
> > > >
> > > > Your server may be experiencing the problem described in this
article:
> > > >
> > > > The Remote Simple Mail Transfer Protocol Service Rejected AUTH
> > Negotiation
> > > > http://support.microsoft.com/default.aspx?scid=kb;en-us;329636
> > > >
> > > > If this doesn't solve the problem, you can use Diagnostic Logging to
> > > > determine the root of a transport issue. To enable Diagnostic
Logging
> on
> > > the
> > > > MSExchangeTransport service:
> > > >
> > > > 1. Start Exchange System Manager.
> > > > 2. Navigate to the server object.
> > > > 3. Right-click , and then click Properties.
> > > > 4. Click the Diagnostic Logging tab.
> > > > 5. Under Services, click MSExchangeTransport.
> > > > 6. Under Categories, set the SMTP Protocol Logging Level to
maximum.
> > > > 7. Force a connection for the queue that's in a retry state
> (restarting
> > > > SMTP service will accomplish this, too) so the delivery will be
> > attempted
> > > > again.
> > > > 8. Check the application event log to see if additional events are
> > logged
> > > > that might explain the problem.
> > > >
> > > > If you are familiar with netmon, you could also try using it to
> > > troubleshoot
> > > > the problem.
> > > >
> > > > --
> > > > Jenny Frye
> > > > Microsoft PSS
> > > >
> > > > This posting is provided 'AS IS' with no warranties and confers no
> > rights.
> > > > Please do not send email directly to this alias. This alias is for
> > > > newsgroup purposes only.
> > > >
> > > >
> > >
> > >
> >
> >
>
>

Jenny Frye [MSFT] · Joined: 05 Aug 2007 Posts: 3

Shivi,

Exchange server does not do reverse lookups on the email addresses of the
sender. The following article explains the type of reverse dns lookup
Exchange does:

The "Perform Reverse DNS Lookup for Incoming Messages" Option Is for Host
Name Resolution
http://support.microsoft.com/default.aspx?scid=kb;en-us;297412

In regards to your question about the spam NDR's slowing delivery of
legitimate emails, you might want to consider implementing a spam filtering
program that removes the majority of incoming spam before it hits the email
server.

Another possible workaround is to disallow NDR's on Exchange. The caveat to
this is it will prevent ALL NDR's from being sent by Exchange. The
following article explains how to disable the NDR's:

How to Control Non-Delivery Reports Using Exchange 2000
http://support.microsoft.com/default.aspx?scid=kb;en-us;294757

--
Jenny Frye
Microsoft PSS

This posting is provided 'AS IS' with no warranties and confers no rights.
Please do not send email directly to this alias. This alias is for
newsgroup purposes only.

"shivi" wrote in message@tk2msftngp13.phx.gbl...
> Hi..
> I found the cause of the problem. (I think)
> My server is receiving a lot of Spam to non existing email ids and
> eventually
> trying to send an NDR, where are the source address is also invalid.
> This is getting piled up on the queues and slowing down the legitimate
mail
> delivery.
>
> Now..need a solution.
> Why is Microsoft exchange Exchange server so lazy to check the existence
of
> the email ID before
> accepting any emails for the local users. ??
>
> Shivi
>
>
> Shivanthan Balendra Network Administrator Arabian Network Information
> Services W.L.L., P.O.Box 10141, Manama, Bahrain. Tel Off: 973-882516 Fax
> Off: 973-683509 Email: shivi@arabian.net Web : www.arabian.net
> "shivi" wrote in message
> news:#WqYEKpeDHA.632@TK2MSFTNGP10.phx.gbl...
> > Hi Eddie,
> > I dont have any kind of guard software installed on the server. And i am
> > looking for one.
> > I tried MAPI LAB Mail storage guard, though its the exact product i am
> > looking for, its not
> > getting installed properly on my system.
> >
> > Thanks
> > Shivi
> >
> >
> > Shivanthan Balendra Network Administrator Arabian Network Information
> > Services W.L.L., P.O.Box 10141, Manama, Bahrain. Tel Off: 973-882516 Fax
> > Off: 973-683509 Email: shivi@arabian.net Web : www.arabian.net
> > "Eddie Harris" wrote in message
> > @TK2MSFTNGP09.phx.gbl...
> > > Do you have GFI mail essentials installed also ?
> > >
> > > "dummy" wrote in message
> > > @tk2msftngp13.phx.gbl...
> > > > Hi Jenny,
> > > > Thanks for your response.
> > > > I've never experienced such a peculier problem with exchange 2000.
> > > >
> > > > I checked for the article, but it doesnt relate to my problem.
> > > > I enabled everything under the MSExchangeTransport service in
> Diagnostic
> > > > Login,
> > > > but dont see any events which helps my problem.
> > > >
> > > > Still i got thousands of queues piled up on the server. Strange
thing
> > is,
> > > > incoming mail works fine.
> > > >
> > > > Today when i checked the queue, I see,
> > > > For Hotmail.com - The connection was dropped by the remote host.
> > > > For Yahoo.com - The status is Ok, but i've got some 3500 emails
queued
> > up
> > > > and it doesnt move.
> > > > And some domains with 1 or 2 emails left on the queue and many with
no
> > > > emails at all and
> > > > having the queue active. (doesnt close it for some reason!!)
> > > >
> > > > This is quite strange and all of this happend without doing any
> changes
> > to
> > > > the setup.
> > > > I did install the September security rollup after getting this
problem
> > but
> > > > had no joy.
> > > >
> > > > Is there anything else that i can do to diagnost the issue.
> > > >
> > > > Thank You
> > > > Shivi
> > > >
> > > >
> > > > "Jenny Frye [MSFT]" wrote in message
> > > > @TK2MSFTNGP11.phx.gbl...
> > > > > Shivi,
> > > > >
> > > > > Your server may be experiencing the problem described in this
> article:
> > > > >
> > > > > The Remote Simple Mail Transfer Protocol Service Rejected AUTH
> > > Negotiation
> > > > > http://support.microsoft.com/default.aspx?scid=kb;en-us;329636
> > > > >
> > > > > If this doesn't solve the problem, you can use Diagnostic Logging
to
> > > > > determine the root of a transport issue. To enable Diagnostic
> Logging
> > on
> > > > the
> > > > > MSExchangeTransport service:
> > > > >
> > > > > 1. Start Exchange System Manager.
> > > > > 2. Navigate to the server object.
> > > > > 3. Right-click , and then click Properties.
> > > > > 4. Click the Diagnostic Logging tab.
> > > > > 5. Under Services, click MSExchangeTransport.
> > > > > 6. Under Categories, set the SMTP Protocol Logging Level to
> maximum.
> > > > > 7. Force a connection for the queue that's in a retry state
> > (restarting
> > > > > SMTP service will accomplish this, too) so the delivery will be
> > > attempted
> > > > > again.
> > > > > 8. Check the application event log to see if additional events
are
> > > logged
> > > > > that might explain the problem.
> > > > >
> > > > > If you are familiar with netmon, you could also try using it to
> > > > troubleshoot
> > > > > the problem.
> > > > >
> > > > > --
> > > > > Jenny Frye
> > > > > Microsoft PSS
> > > > >
> > > > > This posting is provided 'AS IS' with no warranties and confers no
> > > rights.
> > > > > Please do not send email directly to this alias. This alias is
for
> > > > > newsgroup purposes only.
> > > > >
> > > > >
> > > >
> > > >
> > >
> > >
> >
> >
>
>

user · Joined: 06 Aug 2007 Posts: 1

hihi...
"Thomas"
???????:457301c37bb3$fb56fb90$a601280a@phx.gbl...
> I am also experincening this same problem with my server.
> Any help would be appreciated.
>
>
> >-----Original Message-----
> >Hi Jenny,
> > Thanks for your response.
> >I've never experienced such a peculier problem with
> exchange 2000.
> >
> >I checked for the article, but it doesnt relate to my
> problem.
> >I enabled everything under the MSExchangeTransport
> service in Diagnostic
> >Login,
> >but dont see any events which helps my problem.
> >
> >Still i got thousands of queues piled up on the server.
> Strange thing is,
> >incoming mail works fine.
> >
> >Today when i checked the queue, I see,
> >For Hotmail.com - The connection was dropped by the
> remote host.
> >For Yahoo.com - The status is Ok, but i've got some 3500
> emails queued up
> >and it doesnt move.
> >And some domains with 1 or 2 emails left on the queue
> and many with no
> >emails at all and
> >having the queue active. (doesnt close it for some
> reason!!)
> >
> >This is quite strange and all of this happend without
> doing any changes to
> >the setup.
> >I did install the September security rollup after
> getting this problem but
> >had no joy.
> >
> >Is there anything else that i can do to diagnost the
> issue.
> >
> >Thank You
> >Shivi
> >
> >
> >"Jenny Frye [MSFT]" wrote
> in message
> >@TK2MSFTNGP11.phx.gbl...
> >> Shivi,
> >>
> >> Your server may be experiencing the problem described
> in this article:
> >>
> >> The Remote Simple Mail Transfer Protocol Service
> Rejected AUTH Negotiation
> >> http://support.microsoft.com/default.aspx?scid=kb;en-
> us;329636
> >>
> >> If this doesn't solve the problem, you can use
> Diagnostic Logging to
> >> determine the root of a transport issue. To enable
> Diagnostic Logging on
> >the
> >> MSExchangeTransport service:
> >>
> >> 1. Start Exchange System Manager.
> >> 2. Navigate to the server object.
> >> 3. Right-click , and then click
> Properties.
> >> 4. Click the Diagnostic Logging tab.
> >> 5. Under Services, click MSExchangeTransport.
> >> 6. Under Categories, set the SMTP Protocol Logging
> Level to maximum.
> >> 7. Force a connection for the queue that's in a retry
> state (restarting
> >> SMTP service will accomplish this, too) so the
> delivery will be attempted
> >> again.
> >> 8. Check the application event log to see if
> additional events are logged
> >> that might explain the problem.
> >>
> >> If you are familiar with netmon, you could also try
> using it to
> >troubleshoot
> >> the problem.
> >>
> >> --
> >> Jenny Frye
> >> Microsoft PSS
> >>
> >> This posting is provided 'AS IS' with no warranties
> and confers no rights.
> >> Please do not send email directly to this alias. This
> alias is for
> >> newsgroup purposes only.
> >>
> >>
> >
> >
> >.
> >

The e-mail system was unable to deliver the message, but did I am currently migrating from Exchange 5.5 to Exchange 2003. After moving some user mailboxes from 5.5 to 2003 Exchange server, a few users have started receiving the following errors: on 5/15/2007 10:37 AM The e-mail system was unable

Advanced queue failed to deliver message Hi We are running Exchange 2003 SP2. We are running Sophos Pure Message for antivirus. We have maybe 100 users. We have stopped receiving e-mails from certain domains. It seems to be across the board We receive e-mail from other domains. We are able to re

Unable to deliver the message due to a recipient problem(OWA Dear All, Please help meoutin this matter , I am using W2K server and exchange 5.5 with SP4 , every thing is working fine , All the user are sending mails and receiving them back , But if any client try to send mail through OWA the mail return with this

Unable to deliver the message due to a communications failur Receiving the following message when trying to send mail to rr.com (Road Runner): Your message did not reach some or all of the intended recipients. Subject: Test. Please reply if you receive this email. Sent: 3/16/2004 9:57 AM The following recipient(s)

Can no deliver mail 5Mb+ I know what your going to say but EVERY restriction setting is turned off or set higher than 5Mb but I still can not get a mail of 5Mb+ into a an Exchange site. Global Settings / Message Delivery send/service is currently set to 10240kb Mail Store Limits