March 2008 - Posts

Exchange 2007 12018 and 12017 Certificate errors
13 March 08 04:19 PM | andym | 0 Comments   

This can occur and a handful of these seen for a number of reasons. Some of this depending of the cert is generated from an internalCA or externally. The Exchange generated certs last one year from creation so we are seeing a few people hitting this around Read More...

Exchange 2003/2007 Windows 2003 SP2. High Non Paged Pool memory
13 March 08 03:04 PM | andym | 1 Comments   

Something we see a few of is memory and Paged and Non-Paged pool bytes running very high and causing system instability. This often rears its head in the form of events in the event logs, MOM reporting this, or in worse case scenareos Exchange grinding Read More...

One user generates NDR from non-existant user when they receive a Meeting Request
05 March 08 04:50 PM | andym | 0 Comments   

This seems very strange at first. User A receives a meeting request, the sender of the meeting request then receives a NDR from a user that seemingly doesnt exist in AD. This only happens when a meeting request (not an email) is sent to User A. There Read More...

Exchange 2007 external Meeting Request through MessageLabs
03 March 08 05:26 PM | andym | 1 Comments   

At the time of writing there are some known issues with sending Meeting Requests externally from Exchange 2007 through MessageLabs if the "Exchange Rich-text format" is set to anything but "Always Use". This seems to result in plain text meeting requests Read More...

PFs not replicating to Exchange 2007 in mixed organisation
03 March 08 02:22 PM | andym | 0 Comments   

In a mixed Organisation where we have Excvhange 2000 or 2003 when content or the hierarchy isn't replicating over to the Exchange 2007 side this can be caused by the E2k7 server not having permissions on the E2k3 server or PF store. Also we may see the Read More...

Exchange 2007 - Mail queuing/backing up in Submission queue. A Transport agent problem?
03 March 08 02:21 PM | andym | 0 Comments   

So, this can happen for a variety of reasons, is it a spike and busy time? Are disks getting hit/not performing well? Or as occasionally we can see messages, arent going through the Categorizer and into delivery due to a bad transport agent. We can show Read More...