3.10.2 Using mail.local with Various MTAs

This section explains how to invoke mail.local from configuration files of various Mail Transport Agents.

All examples in this section suppose that mail.local must receive following command line switches:

-s %h/.filter.scm -q /etc/mail/userquota

Using mail.local with Sendmail
Using mail.local with Exim

Using mail.local with Sendmail

The mail.local must be invoked from the local mailer definition in the `sendmail.cf' file. It must have the following flags set `lswS', meaning the mailer is local, the quote characters should be stripped off the address before invoking the mailer, the user must have a valid account on this machine and the userid should not be reset before calling the mailer. Additionally, `fn' flags may be specified to allow mail.local to generate usual `From ' envelope instead of the one supplied by sendmail.

If you wish to use mail.local with SQL authentication, you may wish to remove the `w' flag, since in that case the user is not required to have a valid account on the machine that runs sendmail.

Here is an example of mailer definition in `sendmail.cf'

Mlocal, P=/usr/local/libexec/mail.local, F=lsDFMAw5:/|@qSPfhn9, S=EnvFromL/HdrFromL, R=EnvToL/HdrToL, T=DNS/RFC822/X-Unix, A=mail $u

To define local mailer in `mc' source file, it will suffice to set:

define(`LOCAL_MAILER_PATH', `/usr/local/libexec/mail.local') define(`LOCAL_MAILER_ARGS', `mail $u')

Using mail.local with Exim

Using mail.local with Exim is quite straightforward. The following example illustrates the definition of appropriate transport and director in `exim.conf':

# transport mail_local_pipe: driver = pipe command = /usr/local/libexec/mail.local $local_part return_path_add delivery_date_add envelope_to_add # director mail_local: driver = localuser transport = mail_local_pipe