Is it possible to configure more then one SMTP smart eg. relais host in the server configuration document, Tab “Router/SMTP”?
For load balancing and fail-over we would like to use 2 relais/smart-hosts for deliver external mail via smtp.
Subject: More then one smtp relais/smart host?
Uwe,If you need to deliver outbound SMTP mail you do not need a SmartHost to do that. A SmartHost is for mail that cannot be delivered to a local internet domain.
Why not create a foreign SMTP domain document, a global domain document to define local internet mail domains and an SMTP connection with one or more relay host addresses - that should be a more resilient system if you set it up right.
Regards, Ian
Subject: RE: More then one smtp relais/smart host?
Ian,
Does this mean that I can add multiple addresses in the Server Connection document for all internet traffic, in the ‘SMTP MTA relay hosts’ field and if one server isn’t responding, the server will automatically route thru to the other?
Thanks
Jamie
Subject: RE: More then one smtp relais/smart host?
Jamie,
Well, this is not something you will find in the manual. And its not something I discovered myself. BUT the answer seems to be “yes” in Notes 5 and above.
The odd thing is that the OptionalNetworkAddress field isn’t multi-value. But if you put two IP addresses of destination SMTP servers and separate them with a semi-colon it does failowver to the 2nd if the 1st one does not respond.
My contact tells me it only works correctly with IP addresses, not hostnames. I have not tested that. You could, of course, put two SMTP connection documents, but that does not appear to fail over - at least not in a timely manner.
So that’s it, for what its worth. Our R5 system has been set up like that for outbound internet mail at least two years.
Regards, Ian