help! my exchange server keeps getting hacked
Posted on 2010-08-30
i have an exchange server that keeps getting blacklisted. everytime i think it is clean, a few weeks go by and i get blacklisted again. i can see (with wireshark) emails going out on SMTP connections that some virus or someone else is initiating, but i cant seem to get rid of it.
i know this seems basic, but how do i verify that ONLY my authenticated users (about 10) can send out and NO OTHER USER can send out of my exchange server?