Node:sendmail, Next:exim, Up:MTA

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.

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 -s %h/.filter.scm -q /etc/mail/userquota $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 -s %h/.filter.scm -q /etc/mail/userquota $u')