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[Discuss] Backup Postfix/Dovecot E-mail Server?
- Subject: [Discuss] Backup Postfix/Dovecot E-mail Server?
- From: kentborg at borg.org (Kent Borg)
- Date: Mon, 3 Dec 2018 18:23:56 -0500
- In-reply-to: <email@example.com>
- References: <firstname.lastname@example.org> <email@example.com>
On 12/3/18 5:57 PM, Dan Ritter wrote: > This is called a Secondary MX, although you can have any number of them. Yes, I've done that before. But then what? >> * Set up something more clever that keeps the primary and backup in sync so >> both IMAP servers hold the same messages. > High-availability is hard, although this is the easiest case: > you list both machines in your MX records, and have your MTA > deliver to a shared filesystem. DRBD is the usual choice. Dovecot has a replication feature I might play with. First, I need at least a cold-spare: a complete Postfix and Dovecot server that I can point my DNS records to. And my clients (only my wife and I) can point our clients at it as a completely e-mail server. I think that's the first step. Maybe I go to secondary MX and Dovecot replication after that, donno yet. -kb