Unified Qmail Patch 2004_05_02

Unified Qmail Patch provides a concatenation of various patches.
Unified Qmail Patch is a concatenation of various patches for the qmail MTA. It supports SMTP AUTH after STARTTLS, Maildir++, regexp support in badmailfrom, and lots of features for high-end production servers.
Main features:
- Maildir++
- TLS encryption
- SMTP AUTH + SMTP AUTH close
- regexps in badmailfrom and support for badmailto
- external todo
- big remote concurrency patch
- external queue manager
- oversized dns responses
- reverse dns check
- tarpitting
- ESMTP size check from Gentoo
- tab bug fix in .qmail files
- linux link sync
- errno patch (compiles with gcc 3.x too)
- auth only after TLS patch from Gentoo
- Maildir quota fix patch from Gentoo
- qregex memleak fix patch from Gentoo
- David Phillips sendmail flagf patch
- Russ Nelsons QMTP patch for qmail-remote
- Jay Austads random qmqp pickup
- Alin-Adrian Antons integer overflow fix in qmail-smtpd.c
- Added support for SMTP throttling, using relayd
- Added my own patch, that checks whether the mail from value is different from the username used for SMTP AUTH, thus preventing source address spoofing. Useful for ISPs that only relay mails from authenticated users.
- The mail from verification is now configurable through a knob defined in /var/qmail/control/spoofcheck or in the environment variable $SPOOFCHECK
- It seems that in previous versions I accidentally ommited the support for a big todo, so heres a patch that finally supports it. My apologies to all :(