We've migrated an SBS2003 server over to SBS2008 and this has been working fine except on Friday users (only on 2007) were getting certificate errors. I managed to change the internal url through the shell and this then went away.
Over the weekend the Exchange System Attendent appeared to stop, i restarted it this morning and now no-one can turn their Out Of Office on or off or send any kind of attachment through email in Outlook however if they log onto OWA they can do both.
The OOF issue only appears to be on Outlook 2007 as the 2003 users appear to be able to do this fine but no-one can send emails from Outlook with attchements (this only works through OWA)
I am assuming it's certificate related ? but don't know where to go from here.
I have also tried sending a plain email (i.e no signature) with an attachment but it still bounces back.
The bounceback states :
Delivery has failed to these recipients or distribution lists:
The e-mail system had a problem processing this message. Microsoft Exchange will not try to redeliver this message for you. Please provide the following diagnostic text to your system administrator.
Sent by Microsoft Exchange Server 2007
Diagnostic information for administrators:
Generating server: server.internaldomain.local
#550 5.6.0 M2MCVT.StorageError; storage error in content conversion ##
Any ideas would be great.