On 27-03-2019 10:40:17, Andrew C Aitchison wrote:

Hi Andrew,

Thank you for the reply!

Can someone shed some light on this? Should I be using multiple routers with an option I failed to find when reading the docs?

That might get exim to try more than one host each queue run.
However, if a smarthost is not responding, something is wrong.
You should be aiming for this not to happen.
If a smarthost does fail to respond, your aim is for something
sensible to happen eventually, not to try to maximise performance.
Thus I would be happy if the message is delivered by the next queue run.

I implemented hosts_override halfway but I dove into the docs again, and then stumbled over fallback_hosts in the routers chapter and I think I got it now:

dnslookup:
  driver               = manualroute
  transport            = internal_smtp
  route_list           = * 192.168.84.30
  no_more


the transport:

internal_smtp:
  driver = smtp
  interface = OUTGOING_INTERFACE
  fallback_hosts = 192.168.84.31:192.168.84.32


seems to work as I test it. There's no other routers for that transport, so I hope it's OK.

thank you again!

Maarten.

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