Secure network software

This page isn't really being updated. Maybe I should just remove it completely.

SMTP

Postfix

qmail

Exim

Sendmail X

Sendmail seems to be trying to get back into game with a rewrite. I looked at v0.0.16 sources.

Also see comments by Rick Moen

FTP

vsftpd

Pure-FTPd

DNS

djbdns

MaraDNS

Bind 9

HTTP

Most HTTP servers seem to be relatively secure themselves, it's the cgi-bin and other extra modules that are dangerous.

I don't consider Apache 2 secure yet (if ever), it shows constantly in bugtraq. Also all the thread stuff sounds like it's full of holes..

IMAP

Dovecot

Cyrus IMAP

Courier IMAP

UW-IMAP

Binc IMAP