Stefan Frijters 11fa179533 nixos/postfix: restrict inet_protocols to ipv4 when ipv6 is disabled ...

In the previous state, postfix would still try to use IPv6 addresses,
even when it is disabled in the global networking config.

Cf. https://www.postfix.org/postconf.5.html:

  With Postfix 2.8 and earlier the default is "ipv4". For backwards compatibility with these releases,
  the Postfix 2.9 and later upgrade procedure appends an explicit "inet_protocols = ipv4" setting to
  main.cf when no explicit setting is present.
  This compatibility workaround will be phased out as IPv6 deployment becomes more common.

  inet_protocols = ipv4
  inet_protocols = all (DEFAULT)
  inet_protocols = ipv6
  inet_protocols = ipv4, ipv6

So setting it to 'all' conditionally does not help, as we are now on version 3.x.

2023-02-03 11:29:24 +01:00

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