Several (non Domino) servers in our network are emailing for example alerts through SMTP. In their SMTP config is a DNS name of one of the Domino servers that accepts SMTP mail from them. How do I configure failover to another SMTP listening Domino server if I can configure only one host in the sending server ?
Subject: SMTP Mail failover for internal non Domino servers
You could create a DNS entry for SMTP_RELAY@domain.com in this entry you could have 2 IP addresses DominoSMTP1 server 2 DominoSMTP2 server.
There would be a count difference between the too. So the DNS server will try the first server and if it does not reply then the second IP address would be used. This is exactly like what your ISP would do external for mail delivery failover.
Be aware this is not load balancing.