View Single Post
Old 22nd March 2013, 01:34
Happy Happy is offline
Join Date: Jun 2007
Posts: 91
Thanks: 0
Thanked 0 Times in 0 Posts
Default How to refuse NDR and also grey list

I installed The Perfect Server - Ubuntu Lucid Lynx (Ubuntu 10.04) ISPConfig some months ago and it has been running fine up until lately. I am only using the following peices pop3/imap using Maildir format and therefore installed Courier-POP3/Courier-IMAP, Mysql, and Postfix. My mail server has been blacklisted several times lately and I am trying to correct the issues:
My mail server is not an open relay.

1. Users are getting a lot of NDR's -Is there a way not to accept kicked back mail on the mail server and just refuse it?
2. Also is there a way to do grey listing to reduce spam?

I tried getting spam assasin installed sometime ago with no luck.

Reply With Quote
Sponsored Links