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   qmtp stream tcp nowait qmaild
   /var/qmail/bin/tcp-env tcp-env /var/qmail/bin/qmail-qmtpd

into /etc/inetd.conf, and give inetd a HUP.

If you have tcpserver installed, skip the inetd step, and set up

   tcpserver -u 7770 -g 2108 0 qmtp /var/qmail/bin/qmail-qmtpd &

replacing 7770 and 2108 with the qmaild uid and nofiles gid. See
question 5.1 for more details on tcpserver.


5.3. How do I set up qmail-pop3d? My old POP server works with mbox
delivery; I'd like to switch to maildir delivery.

Answer: Four steps. First, install the checkpassword program
(http://pobox.com/~djb/checkpwd.html). Second, make sure you have a

   pop3 110/tcp

line in /etc/services. Third, put (all on one line, including
qmail-popup twice)

   pop3 stream tcp nowait root
   /var/qmail/bin/qmail-popup qmail-popup
   YOURHOST /bin/checkpassword /var/qmail/bin/qmail-pop3d Maildir

into /etc/inetd.conf, and give inetd a HUP; replace YOURHOST with your
host's fully qualified domain name. Fourth, set up Maildir delivery for
any user who wants to read mail via POP.

If you have tcpserver installed, skip the inetd step, and set up (on two
lines)

   tcpserver 0 pop3 /var/qmail/bin/qmail-popup YOURHOST \
   /bin/checkpassword /var/qmail/bin/qmail-pop3d Maildir &

replacing YOURHOST with your host's fully qualified domain name. See
question 5.1 for more details on tcpserver.

Security note: pop3d should be used only within a secure network;
otherwise an eavesdropper can steal passwords.


5.4. How do I allow selected clients to use this host as a relay? I see
that qmail-smtpd rejects messages to any host not listed in
control/rcpthosts.

Answer: Three steps. First, install tcp-wrappers, available separately,
including hosts_options. Second, change your qmail-smtpd line in
inetd.conf to

   smtp stream tcp nowait qmaild /usr/local/bin/tcpd
   /var/qmail/bin/tcp-env /var/qmail/bin/qmail-smtpd

(all on one line) and give inetd a HUP. Third, in tcpd's hosts.allow,
make a line setting the environment variable RELAYCLIENT to the empty
string for the selected clients:

   tcp-env: 1.2.3.4, 1.2.3.5: setenv = RELAYCLIENT

Here 1.2.3.4 and 1.2.3.5 are the clients' IP addresses. qmail-smtpd
ignores control/rcpthosts when RELAYCLIENT is set. (It also appends
RELAYCLIENT to each envelope recipient address. See question 5.5 for an
application.)

Alternative procedure, if you are using tcpserver 0.80 or above: Create
/etc/tcp.smtp containing

   1.2.3.6:allow,RELAYCLIENT=""
   127.:allow,RELAYCLIENT=""

to allow clients with IP addresses 1.2.3.6 and 127.*. Run

   tcprules /etc/tcp.smtp.cdb /etc/tcp.smtp.tmp < /etc/tcp.smtp

Finally, insert

   -x /etc/tcp.smtp.cdb

after tcpserver in your qmail-smtpd invocation.


5.5. How do I fix up messages from broken SMTP clients?

Answer: Three steps. First, put

   | bouncesaying 'Permission denied' [ "@$HOST" != "@fixme" ]
   | qmail-inject -f "$SENDER" -- "$DEFAULT"

into ~alias/.qmail-fixup-default. Second, put

   fixme:fixup

into /var/qmail/control/virtualdomains, and give qmail-send a HUP.
Third, follow the procedure in question 5.4, but set RELAYCLIENT to the
string ``@fixme'':

   tcp-env: 1.2.3.6, 1.2.3.7: setenv = RELAYCLIENT @fixme

Here 1.2.3.6 and 1.2.3.7 are the clients' IP addresses. If you are using
tcpserver instead of inetd and tcpd, put

   1.2.3.6:allow,RELAYCLIENT="@fixme"
   1.2.3.7:allow,RELAYCLIENT="@fixme"

into /etc/tcp.smtp, and run tcprules as in question 5.4.


5.6. How do I set up qmail-qmqpd? I'd like to allow fast queueing of
outgoing mail from authorized clients.

Answer: Make sure you have installed tcpserver 0.80 or above. Create
/etc/qmqp.tcp in tcprules format to allow connections from authorized
hosts. For example, if queueing is allowed from 1.2.3.*:

   1.2.3.:allow
   :deny

Convert /etc/qmqp.tcp to /etc/qmqp.cdb:

   tcprules /etc/qmqp.cdb /etc/qmqp.tmp < /etc/qmqp.tcp

Finally, set up

   tcpserver -x /etc/qmqp.cdb -u 7770 -g 2108 0 628 /var/qmail/bin/qmail-qmqpd &

replacing 7770 and 2108 with the qmaild uid and nofiles gid. See
question 5.1 for more details on tcpserver.



6. Configuring MUAs to work with qmail


6.1. How do I make BSD mail generate a Date with the local time zone?
When I send mail, I'd rather use the local time zone than GMT, since
some MUAs don't know how to display Date in the receiver's time zone.

Answer: Put

   set sendmail=/var/qmail/bin/datemail

into your .mailrc or your system-wide Mail.rc. Beware that BSD mail is
neither secure nor reliable.


6.2. How do I make pine work with qmail?

Answer: Put

   sendmail-path=/usr/lib/sendmail -oem -oi -t

into /usr/local/lib/pine.conf. (This will work with sendmail too.)
Beware that pine is neither secure nor reliable.


6.3. How do I make MH work with qmail?