I have a query on SMTP routing when using the Alt-Mailhost command in a Message Filter...
Our configuration in overview is two Ironport devices (C650's at AsyncOS 6.4) at separate sites, configured as a cluster (all config is common across sites). At each site, there also exists a 3rd party mail host.
So, I have a message filter which selects messages based on some criteria and I also know which Ironport received it. When I have a match, I want to route this message to the 3rd party mail host on the _local_ site......but if that mail host is down, I want to route it to the 3rd party mail host on the other site. Simple as that!
At the moment, my Alt-Mailhost command looks like this;
...but this doesn't work because multiple hosts in an SMTP route are tried in numerical / alphabetical order...no matter what order you put them into the SMTP Route definition (is this a bug?)....so in reality, they both have to look like this;
Enhanced: Prioritized SMTP Routes AsyncOS 7.0 allows you to prioritize the destination hosts for your SMTP routes. AsyncOS will attempt to deliver the message to a destination host in order based on priority. Destinations with identical priority will be used in a “round-robin” fashion.
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...