That should just affect the incoming; if an email in queue is addressed to am alias recipient, postfix queries for the zimbraMailAlias attribute asking for the zimbraDeliveryAddress value as the result.
#EOF/myKnowledge The above is the only reason I jumped into this thread-Sry, I'm not current on the outlook connector/nor do I have outlook installed-thankgoodness!
(I do now know what the outlook connector looks at when deciding on the 'replyto' address)
Things to try:
changing the 'reply-to' in the web client options tab>mail identities> have any effect?
maybe set 'mt' as the canonical address (though this affects the 'from' not 'replyto' - I really couldn't tell you if the outlook connector would drop the different replyto then...)
EDIT: Now I doubt these two would actually work because someone would have mentioned it by now...
As a last resort you could rename 'mary' to 'mt' then set an alias as 'mary'? Would be the exact opposite of what you have now (might need outlook re-configuring)
Everyone's waiting for this:
Bug 12404 - identities for the Outlook connector Bug 17242 - Outlook Connector: Reply-to address cannot be changed