SMTP Outbound Queue Freezing

andyvm · Post by **andyvm** » Wed Sep 28, 2005 11:51 pm

Hello,

Having an issue where the SMTP outbound queue is getting locked up. If you stop then restart the SMTP service, the e-mails then send.

Running version 1.6 with a hotfix applied to the MEAPWMS.dll file for an attachment issue.

Any ideas?

Thanks,
Andy

andyvm · Post by **andyvm** » Mon Oct 10, 2005 2:53 pm

Still freezes, claimng DNS error. Stop and then Start the SMTP server and all mail sends out just fine.

Any ideas? Happens about once every 24-48 hours

Post by **MailEnable** » Mon Oct 10, 2005 3:33 pm

It will report a number with the DNS error. The error number will give some insight as to the cause. eg: 9003, 1460, etc.

andyvm · Post by **andyvm** » Mon Oct 10, 2005 8:55 pm

Received this in event viewer today...

Code: Select all

Event Type:	Error
Event Source:	Application Error
Event Category:	(100)
Event ID:	1000
Date:		10/10/2005
Time:		11:49:30 AM
User:		N/A
Computer:	NETAPPEAL
Description:
Faulting application MESMTPC.exe, version 1.0.0.1, faulting module dnsapi.dll, version 5.2.3790.0, fault address 0x0000cacb.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 41 70 70 6c 69 63 61 74   Applicat
0008: 69 6f 6e 20 46 61 69 6c   ion Fail
0010: 75 72 65 20 20 4d 45 53   ure  MES
0018: 4d 54 50 43 2e 65 78 65   MTPC.exe
0020: 20 31 2e 30 2e 30 2e 31    1.0.0.1
0028: 20 69 6e 20 64 6e 73 61    in dnsa
0030: 70 69 2e 64 6c 6c 20 35   pi.dll 5
0038: 2e 32 2e 33 37 39 30 2e   .2.3790.
0040: 30 20 61 74 20 6f 66 66   0 at off
0048: 73 65 74 20 30 30 30 30   set 0000
0050: 63 61 63 62               cacb

Also received numerous errors in the debug log like this:

Code: Select all

10/03/05 12:12:44	ME-E0059: [161FEE152AF849148BFC30848E6C1674.MAI] Message Delivery Failure. Attempt (5): Could not find mail server for domain (1ici.com). The remote mail server could not be contacted at this time. Message has been requeued.
10/03/05 12:12:44	ME-E0124: Error (14): Could not resolve MX list for domain [sptc.net]
10/03/05 12:12:44	ME-I0026: [211432FAFE324C7C8DCE33A0A625FB6F.MAI] Sending message
10/03/05 12:12:44	ME-E0059: [211432FAFE324C7C8DCE33A0A625FB6F.MAI] Message Delivery Failure. Attempt (5): Could not find mail server for domain (sptc.net). The remote mail server could not be contacted at this time. Message has been requeued.
10/03/05 12:12:44	ME-E0124: Error (14): Could not resolve MX list for domain [paramountprop.com]
10/03/05 12:12:44	ME-I0026: [2586FA2D790441328FB6F3FAB9C8F35B.MAI] Sending message
10/03/05 12:12:44	ME-E0059: [2586FA2D790441328FB6F3FAB9C8F35B.MAI] Message Delivery Failure. Attempt (6): Could not find mail server for domain (paramountprop.com). The remote mail server could not be contacted at this time. Message has been requeued.
10/03/05 12:12:44	ME-E0124: Error (14): Could not resolve MX list for domain [wellsfargo.com]
10/03/05 12:12:44	ME-I0026: [53B5F9F112DD4CF69761862CBCCBAA5B.MAI] Sending message

jfenwickar · Post by **jfenwickar** » Tue Oct 11, 2005 2:57 pm

This sounds like you are running a CISCO router with MailGuard.

Just bypass the MailGuard function and it should be OK

Jesse

andyvm · Post by **andyvm** » Wed Oct 12, 2005 5:05 pm

Not a router issue, an issue after an upgrade to 1.6.

Also, the issue seems to happen when some NDR's for domains that do not exist get stuck in the queue.

andyvm · Post by **andyvm** » Fri Oct 28, 2005 6:32 pm

Still have issues, all relating to the dnsapi.dll. Any info/confirmation on this?

Locks up when there is an e-mail in the queue being sent to an invalid domain.

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