Posts Tagged ‘SMTP’

Exchange 2010 Queue – 421 4.2.2 Connection dropped due to SocketError

October 5th, 2011

Problem

Exchange 2010 messages stuck in queue with 421 4.2.2 Connection dropped due to SocketError
Keywords: Exchange 2010

Platform

Server 2008, Exchange 2010 with all current rollups, Cisco ASA Firewall

Symptoms

Messages would sit in the Exchange 2010 Queue with 421 4.2.2 Connection dropped due to SocketError . Many messages would eventually deliver, but only after sending delay messages to the originator. This would only impact certain messages not all messages to a certain domain. It also affected inbound as well as outbound messages. So there were a number of complaints that users were not receiving messages from certain users.

Fix

After doing a lot of research, the common thread that I found was that everyone experiencing this issue had Cisco ASA firewalls and disabling the ESMTP Service resolved most of the issues. I spoke with my network admin and had the service disabled. Instantaneously my queues shrunk to near nothing resolving all of these issues. Reports of people not getting email also stopped. I do not have specifics on how to disable the service, but you should be able to find the information out there.

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dyndns mailhop outbound setup for small business server 2003

September 28th, 2011

I had to configure a Small Business Server 2003 for the dyndns mailhop outbound service.  I did a lot of searching finding good instructions.  I found this post which had all the steps necessary for me.  http://csipc.wordpress.com/2008/04/16/dyndns-mailhop-services/

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