[Bug 1519331] Re: Mail delivery fails until restarting postfix

[Erik Auerswald]

I might have found the reason for this behaviour:

1) Without network connectivity, the file /etc/resolv.conf does not
contain any useful information (just two comment lines).

2) After establishing network connectivity, the file /etc/resolv.conf
contains 127.0.1.1 and a correct search path as received via DHCP.

3) Postfix copies the file /etc/resolv.conf to
/var/spool/postfix/etc/resolv.conf upon startup. If postfix is started
before the network is up, this file will not allow name resolution.
Every other application uses /etc/resolv.conf and works fine.

Perhaps Network-Manager could restart postfix upon connection-up events?
Can this be configured?

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https://bugs.launchpad.net/bugs/1519331

Title:
  Mail delivery fails until restarting postfix

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