Am 12.01.22 um 16:02 schrieb Dmitriy Matrosov via Exim-users:
Hi.
Is it possible to re-route certain mails on the primary server (with
lowest MX priority)
to the secondary (the one with highest priority)?
My use case is if the recipient is not found on the primary server,
try to deliver a message to the secondary server (which is controlled
by another person).
Thanks.
SMTP Server are backupservers, with the same address setup.
Your primary should take the mail and send it to the second server, or,
easier: use a subdomain for the secondserver and his addresses, as any
subdomain can have it's own MX entry. Example:
domain.com. IN MX 0 mx.domain.com
berlin.domain.com. IN MX 0 mx.berlin.domain.com
If you want one @domain.com with two distinct servers, take it on any
of them and reroute it :
for your secondary
secondmx:
driver = manualroute
domains = +local_domains
condition = ... your condition for a message to your primary server...
transport = remote_smtp
route_data = mx.primary.domain.com
ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8
no_more
for your primary
secondmx:
driver = manualroute
domains = +local_domains
condition = ... your condition for a message to your secondary server...
transport = remote_smtp
route_data = mx.secondary.domain.com
ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8
no_more
Each one should stand BEFORE the "dnslookup"-router in it's version of
your exim.conf, depending on the server it is on.
Best regards,
Marius
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