On 14.09.22 13:14, Jonathan Sélea wrote:
Here you go:
<https://www.howtoforge.com/postfix_backup_mx>
The first result on Google ;)
I would add address verification check:
http://www.postfix.org/ADDRESS_VERIFICATION_README.html
...but set unverified_recipient_defer_code to 250 to accept mail if address
verification fails, which happens when primary MX is down, which is exactly
when we need backup MX.
On Wed, Sep 14 2022 at 07:10:57 PM +0800, Henrik Pang
<panghen...@gmail.com> wrote:
Is there a guide for adding a secondary MX with postfix?
the secondary MX would forward messages to the main MX.
When the main MX was in failure, the secondary MX should hold
messages for some time.
--
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