Hi guys,<br><br>I&#39;ve been receiving complaints lately from my users about messages not getting to them and on investigating, I have found that a number of local ISPs have blacklisted mail servers. Is it just me or is it common among admins on the list? I have configured my mail server to reject messages relayed by mailservers blacklisted by spamcop, spamhaus and barracuda and respond with a message explaining that action. Now this has got me wondering whether I have made my security settings too tight or what...<br>

<br>Is that too drastic a security measure that I have taken?<br><br><br>Me.<br>