Exchange User can not email to one other internal user
Posted on 2010-09-02
I have a 2 server Exchange 2003 environment. The issue i am having is domainuserA can not email domaimuserB. But B can email A (all internal mail, single domain). I get no NDR and exchange message tracking shows the email as delivered to user B's inbox. But its not there. I disabled symantec mail security and looked in the quarantine logs but its not there. Besides mail security emails my admin account when it does anything and there is nothing about blocking this email there.
For testing I created another user on the same mailbox store as User B and A was able to email and receive my mail.
I then created a user on the Mailbox store with UserA and again was able to send/receive all around.
UserA can send out to external email addresses with no issue and to everyone else internally with no issue. It doesn't seem to be a mailbox store issue either as the above test showed. There are no mailbox filtering rules in place for sizes etc...
This all points me to userB's Outlook rules. But i checked and while they have 15+ rules none are for UserA. I checked outlook junk mail and nothing. Deleted Items nothing.
Where is this mail going if it shows delivered by message tracking? It follows the same path from exchange server 1 to exchange server 2 to delivery to local mailbox as test mails from other users that worked.
I'm sort of out of ideas and was wondering if anyone came across this?
(I dont want to start thinking of recreating the user/mailbox exporting/importing mail etc... just yet)