Last week I got a client that wanted me to spam virii filter for their in house exchange server.
I changed the mx from mail.domain.tld (their exchange) to mail2.domain.tld (my sa box) which relayed to mail.domain.tld. Last week all worked as expected. The hundreds of spam droped to 0; until this weekend. Looking at the headers, mail is going directly to the mail.domain.tld even though it isn't listed as mx anywhere. I can tell the exchange server to only except mail from my server but has anyone else experienced this? -bazooka
