[SOLVED]Bounces going to wrong address since 3.4.8 update

Configuration file hasn’t changed… but now my bounces are bouncing back to the “From” address rather than the envelope-sender specified. This always used to work perfectly before - is there something I can tweak to get bounces going back to my bounce address again?

Thanks in Advance!!

OOPS! sorry, it turns out there was a new ( hidden!) mail rule on the server, redirecting bounce-mails. A check of the mail headers showed they are all being bounced correctly.