Exchange 2010 auto forwarding some mails without a rule being set

I currently run a 2010 exchange server,
I have two user that complain that their emails get automatically forwarded to another user.
For one person every email they send is cc'd to the third person but only random emails from the second user are cc'd to the third person.

I have checked for rules on both users outlook and owa systems, but none have been set.
I have also checked on the exchange server configuration transport setting but again no rules have been set there either.

The original mail recipient does not know that their mail has been forwarded and neither does the original sender.

The mail on the third person has no headers only stated that it has been autoforwarded

Any ideas would be good as people are now worried about email security

Thanks in advance
CrezzAsked:
Who is Participating?
 
CrezzAuthor Commented:
Thanks for your assistance

It turns out there was a rule set within the out of office area that we missed.
0
 
N-WCommented:
A couple of things you might want to do:
1) Check through any anti-virus/anti-spam software to ensure there's no forwarding going on there
2) Look at the emails in Exchange Message Tracking and see exactly how they're being routed to mailboxes
0
 
c1nmoCommented:
Journaling  rules?
0
Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

 
c1nmoCommented:
'Forward to:' in active directory user, exchange general, delivery options...
0
 
CrezzAuthor Commented:
close
0
 
CrezzAuthor Commented:
just to update everyone
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.