I don’t use the server mailboxes, instead all addresses are forwarders to gmail address. (I send through SMTP though)
My VPS is hosted on OVH, and today they blocked port 25 due to supposedly sending spam. I manually inspected the mail queue and nothing is compromised, the problem is I receive spam messages, and when they get forwarded to Gmail, it looks like I’m sending spam. The OVH block is easy to lift, but eventually I might get blacklisted by Google and that’s really bad.
I use both SpamAssasin and ClamAV with default settings after a clean install.
I suppose those few messages aren’t caught by SpamAssasin? Is there any way I could improve the detection of spam, or not resend messages rejected by Google?