odd logs for most active senders

[aurfalien]

Hi all,

Zimbra is setup so that smtp access requires username/pass.

However in my daily reports (emailed to me), I see that under Most Active Senders are;

overspecializepq1@resultspriceless.com
n.4714.12295378@onlinefamilyproducts.net
... on and on with strange users@domains.

I've even tested my config by a 3rd party relay checker tool which ran 11 tests and said that I didn't allow relaying.

What's really going on here?

Thanks in advance.

[uxbod]

Search the forums for backscatter. Sounds like your domains are being spoofed. Welcome to the club