HI,
Some users are getting below error when sending mails to external accounts. we have exchnage 2010 and issue occurs only when sending mails outside the org.
The following recipient(s) cannot be reached:
'abc@xyz.com' on 6/7/2013 11:20 AM
This message could not be sent. Try sending the message again later, or contact your network administrator. Error is [0x80004005-00000000-00000000].
Some articles i found were pointing to max. recipients limits issue. But the issue happens even when sending mail to a single recipient ( SO i guess this is not the issue here ). Also mails are going out fine when sent throught through OWA.
Recreation of outlook cache profile also seems to resolve the issue.
Exchange Admin