by Code Crafters » Wed Jul 09, 2008 9:58 am
The Outgoing Mail Bind IPs are there to specify routes that are available to you for sending mail. However, in the current version there is no functionality for evenly load distributing between the IPs. As far as I can remeber the IPs will simply be tried in the order listed until one successfully sends the mail.
We are upgrading the outgoing mail system in Abiltiy Mail Server 3 due out hopefully later this year. The new outgoing mail system will include an outgoing mail queue viewer which you can use to view mails in the queue and also take action against them (e.g. retry, delete). There will also be a new queue priority system so that mails that have already had one failed delivery will wait longer to retry than new mails that haven't "had a go" yet. I will forward your suggestion for load balancing amongst outgoing bound IPs to the team for consideration for a future update.