Timo Sirainen schrieb:
where lmtp.example.com expands to your two IP addresses. DNS server handles load balancing by returning IPs in round robin and Postfix handles fallbacking to the second IP if the first one doesn't work. Dovecot has similar behavior in several places.
As far as I understand, lmtp.example.com with out records would result in a MX-lookup. If postfix behaves for lmtp like it does for smtp, it will try all listed MX (my directors) in turn.
