Sendmail as a send-only local server

From Notes to self
Revision as of 01:25, 9 August 2015 by Verbovet (talk | contribs)
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  • # cd /usr/share/sendmail/cf/cf
  • Edit sendmail-slackware.mc :
    • Add the line FEATURE(`no_default_msa')dnl to the FEATURE block
    • Add the lines
DAEMON_OPTIONS(`NAME=NoMTA4, Family=inet,  Addr=127.0.0.1')dnl
DAEMON_OPTIONS(`Name=MSA4,   Family=inet,  Addr=127.0.0.1, Port=587, M=E')dnl

right before the MAILER lines

  • # m4 sendmail-slackware.mc > /etc/mail/sendmail.cf
  • Add something like
root:           user
user:           user@example.org
to /etc/mail/aliases; then run the command newaliases
  • # /etc/rc.d/rc.sendmail restart
  • Make sure that the fqdn-hostname is in the DNS and is whitelisted in the inbound smtp server for example.org
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