Configuring Smart Host service in Sendmail

1. Open up your Sendmail configuration file (/etc/mail/ with your favorite text editor (vi, joe, etc).

2. Look for the following lines:
  # "Smart" relay host (may be null)


3. Now, append the smart host to the DS field (with no spaces!) like so:

  # "Smart" relay host (may be null)

4. You will then need to save the file and restart the Sendmail service.

  (service sendmail restart, killall -1 sendmail, etc)


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