4 Jan
2008
4 Jan
'08
4:48 a.m.
On Friday 04 January 2008 10:30:32 Ugo Bellavance wrote:
AFAIK, redundancy for mail server seldom uses linux-ha/any other failover stuffs. It is most common to use 'backup MX' in DNS settings. So, when the main server in unreachable, the sender mail server would try to the secondary MX through DNS query.
That's the easy part, but where do you store the e-mail once you have accepted it? If the pop/IMAP server is down for a while, people won't be able to retreive their e-mail...
The secondary MX will temporarily store the mails. And when the primary server is up again, it will get all the mail from the secondary. Yes. there will be a down time in terms of mail service for users.
Maybe others can recommend a better best practice for this.
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Fajar Priyanto | Reg'd Linux User #327841 | Linux tutorial
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