This is I suspect a little off-topic for here, in which case accept my
apologies please.
My Postfix instance is well-established on a LAN behind a WAN IP with
a decent reputation. The internet router for the network has a 4G
failover device for occasional downtime to ensure that critical comms
can still be routed to the internet, e.g. security system
notifications (not over email).
When the router fails over, postfix's default route to the internet
still goes through the same gateway IP and the internet is accessible
- but now postfix sees the world through the router getting to the
internet via a non-static IP, not reversible DNS, etc.; I'd like it to
not send anything but queue until the standard route returns.
Is there a postfix way to do this? Or should I be looking at
lower-level network routing configuration for the server running
postfix?
Thanks for any ideas.
--
Simon Wilson
M: 0400 12 11 16
