On Aug 4, 2009, at 9:00 PM, Chookiex wrote:
Hi All,
I want to do a test with postfix.
For example, I will relay many mails to postfix and postfix delivery
maiils to mda.
But you know, mda may not be stable enough, so mda would not work
occasionally.
At this time, the postfix would bounce mails, I can not hope to see
it.
So, how to forbid the bounced mail?
It is generally not in your control. The sending server should know
to retry again later, for at the least, a few hours. I retry 12 hours
by default, many others use a much greater time.
A second line of protection would be a secondary MX, which will accept
all emails and hold them until your primary comes back online. I have
decided that due to spammers the secondary MX is not worth it for me.
Spammers like to target a secondary MX directly, and I was unable to
keep the secondary and primary in sync with regard to anti spam
measures and configs.
I figured, most retry intervals are long enough that I should be able
to get some form of limited receiving server back online within that
time window.
--
Scott * If you contact me off list replace talklists@ with scott@ *
