Given a mail server with latest Postfix and a transport map like this for some domains that routes the delivery thru ISP MTA:

domain1.com  relay:[isp.mta.com]
domain2.com  relay:[isp.mta.com]
domain3.com  relay:[isp.mta.com]

ISP (is a big one) says that since sometimes his MTA is listed in some RBL we can try with another MTA as a fallback or round-robin

If I put something like this

domain1.com  relay:[isp.mta.com]
domain2.com  relay:[isp.mta.com]
domain3.com  relay:[isp.mta.com]
domain1.com  relay:[isp.mtabak.com]
domain2.com  relay:[isp.mtabak.com]
domain3.com  relay:[isp.mtabak.com]

Postfix uses always the second entry.

Is there a way to tell Postfix to use one and if the connection fails use the other, just like a DNS MX weight?

Thank you

--


Ciao,
luigi

/
+--[Luigi Rosa]--
\

Don't focus on the one guy who hates you. You don't go to the park
and set your picnic down next to the only pile of dog shit.

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