Enable the postfix Mail Transfer Agent

I want to use git’s mailing capabilities on OS X Lion to send out patches. How do I configure the MTA?

This Enable the postfix Mail Transfer Agent looks interesting, but old:

  loghyr:postfix root# head /etc/hostconfig 
  # This file is going away

But I think we can control all of this from the postfix(1).

  loghyr:postfix root# postconf -d | grep etc
  alias_database = hash:/etc/aliases
  alias_maps = hash:/etc/aliases
  config_directory = /etc/postfix
  sample_directory = /etc/postfix

I’m going to need a version for my home network and my vpn network:

loghyr:postfix root# cp main.cf home.cf
loghyr:postfix root# cp main.cf work.cf
loghyr:postfix root# cp main.cf default.cf

Edit the config files and start it:

loghyr:postfix root# cp work.cf main.cf
loghyr:postfix root# postfix start 
postfix/postfix-script: warning: group or other writable: /Library/Server/Mail/Data/mta
postfix/postfix-script: starting the Postfix mail system

How do I get it to stay launched? What’s the correctly way to make Postfix run permanently on Lion (not server)

I can switch my config files as needed.

Hmm, it works. I can’t show you, but it works.

The main thing I changed from the article I linked in was the relayhost:

relayhost = [mail.internal.excfb.com]

My setup assumes that I am connecting to an already working mail server in the domain. I.e., my iMac isn’t going to be receiving mail, just sending it.

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