[SAC] [OSGeo] #3010: Postfix unable to connect to IPv6 SMTP servers

#3010: Postfix unable to connect to IPv6 SMTP servers
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Reporter: strk | Owner: sac@…
     Type: task | Status: new
Priority: normal | Milestone: Unplanned
Component: SysAdmin/Postfix | Keywords:
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The postfix log has many occurrences of failing attempts to connect to
IPv6 of target SMTP servers. It falls back to use IPv4 which succeeds but
it's a waste of time to even try given it is unable.

osgeo6 does not have any IPv6 configuration (no address) so cannot
possibly connect there

We can tell postfix to not even try, using `inet_protocols = ipv4` in
main.cf (short-term fix) but in general it would be good to enable ipv6 on
osgeo6 (maybe after #2823 ?).
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Ticket URL: <https://trac.osgeo.org/osgeo/ticket/3010&gt;
OSGeo <Gter - OSGeo;
OSGeo committee and general foundation issue tracker.

#3010: Postfix unable to connect to IPv6 SMTP servers
------------------------------+------------------------
Reporter: strk | Owner: sac@…
     Type: task | Status: closed
Priority: normal | Milestone: Unplanned
Component: SysAdmin/Postfix | Resolution: fixed
Keywords: |
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Changes (by strk):

* status: new => closed
* resolution: => fixed

Comment:

ipv6 disabled with https://git.osgeo.org/gitea/sac/ansible-
deployment/commit/3ba53e90d617943ac54e440eded56bfbf89a3cb3
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Ticket URL: <https://trac.osgeo.org/osgeo/ticket/3010#comment:1&gt;
OSGeo <https://osgeo.org/&gt;
OSGeo committee and general foundation issue tracker.