Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have a Cisco PIX 501 firewall and have been blacklisted because people are able to spam from my email server. How can I configure the firewall so that people cannot use my email server to send spam?

share|improve this question

closed as off-topic by TheCleaner, Dave M, Tim Howland, Scott Pack, dawud Oct 11 '13 at 6:57

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions must demonstrate a minimal understanding of the problem being solved. Try including attempted solutions, why they didn't work, and the expected results. See How can I ask better questions on Server Fault? for further guidance." – TheCleaner, Dave M, Tim Howland, Scott Pack, dawud
If this question can be reworded to fit the rules in the help center, please edit the question.

you sure it's your email server? More than likely it's a machine on your LAN so in that case, you need to add an acl to permit outbound SMTP to the mail server only (followed by deny all). – gravyface Oct 10 '13 at 11:30
That's not a firewall problem, it's a mail server relay config problem. – Trondh Oct 10 '13 at 13:26
Fix your email server. This problem has nothing to do with your firewall. – joeqwerty Oct 10 '13 at 22:15

Configure it to block all email. If you want to keep using email from inside the PIX, you'll need to fix the problem on the mail server and leave the PIX alone.

share|improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.