Obligatory disclaimer: This software is in the public domain, is provided by the author "as is," and any express or implied warranties, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose are disclaimed. In no event shall the author be liable for any direct, indirect, incidental, special, exemplary, or consequential damages (including, but not limited to, procurement of substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the use of this software, even if advised of the possibility of such damage.

qmail-1.03:

• qmail-smtpd-auth-0.31
  Adds the RFC 2554 SMTP AUTH extension. This patch is also available from Krzysztof Dabrowski's homepage. Krzysztof runs a mailing list for patch support. The README file provides additional detail about the patch.

• myctime.patch
  Adds timezone information to the mbox "From" header created by qmail. This fixes a problem where some MUAs will display mail received timestamps in GMT, rather than local time. The setup on which this patch has been tested (and demonstrated to actually work) is:
  • delivery to ~/Mailbox (mbox)
  • client access via IMAP (uw-imapd the server)
  • client MUA Outlook 2000

  AFAICT, the UW IMAP server, for whatever the reason, passes the timestamp in the mbox "From" header on to the client (as the "received" time?). Since no timezone info is given in the timestamp, either the server or the client makes the assumption that it's in localtime (when in fact it's GMT). Therefore, my naive solution is to simply append " -0000" to the timestamp, which seems to make everyone happy. Whether or not this is proper for the mbox "From" header, I don't know.

• qmail-auth+tls-20020509
  This experimental patch combines the above SMTP AUTH patch with modified portions of Frederik Vermeulen's RFC 2487 tls.patch. Note that it only adds the STARTTLS extension to qmail-smtpd; MTA encryption support in qmail-remote has not been carried over. The README file provides additional detail about the patch. You're on your own with this patch -- answering questions about it will be a low priority for me.