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Failover MX-Scenario

IngoPohlschneider
Hello
I am currently thinking about implementing a fallback scenario for our mail-server.

Currently we are using two uplinks with static addresses. One is used for mail (via Multipath rule). The MX record points to an A record which resolves to this static address.

What I now want is the following:
mydomain.de MX 1 mail1.mydomain.de
                      MX 10 mail2.mydomain.de

mail1.mydomain.de A 
mail2.mydomain.de A 

The fallback line is configured for standby, so its down while the other line is up. If I understand MX-records correctly, this config would ALWAYS refer to mail1.mydomain.de unless mail1.mydomain.de is unreachable right?

So that would be a working Failover scenario that would also make sure that my domain doesn't get blacklisted due to wrong sender address right?

Thanks for you guys double-checking


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  • 0
    Yes, if you wanted more of a load-balancing approach for received mail, you could have two A records for the same FQDN.  That would solve your FCrDNS issue, too.

    You can prioritize outbound email with a Multipathing rule binding SMTP to the primary interface.  The 100/0 weighting accomplishes that, too.

    Cheers - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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  • 0
    Yes, if you wanted more of a load-balancing approach for received mail, you could have two A records for the same FQDN.  That would solve your FCrDNS issue, too.

    You can prioritize outbound email with a Multipathing rule binding SMTP to the primary interface.  The 100/0 weighting accomplishes that, too.

    Cheers - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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