Hi,

I see some messages in log files like this. STATUS - DEFERRED

May 24 09:32:36 corp postfix/smtp[25705]: 78F121BBCD04: host mx.tplants.com[85.234.0.132] said: 451-92.255.234.179 is not yet authorized to deliver mail from 451 <anna@rk-airplane.ru> to <project@tplants.com>. Please try later. (in reply to RCPT TO command)
May 24 09:32:39 corp postfix/smtp[25705]: 78F121BBCD04: to=<project@tplants.com>, relay=mx2.tplants.com[85.234.0.68]:25, delay=9.3, delays=0.1/0.01/6.1/3.1, dsn=4.0.0, status=deferred (host mx2.tplants.com[85.234.0.68] said: 451-92.255.234.179 is not yet authorized to deliver mail from 451 <anna@rk-airplane.ru> to <project@tplants.com>. Please try later. (in reply to RCPT TO command))
Is something wrong with configuration of my server?

Here
#2489 (address verification yields 451)
I found that
Server should accept mail with an Envelope-Sender of <> (the null address), used
for processing bounce messages and an Envelope-Recipient of the sender of
the message.


Does it accept?

What do I do with message 451 ? And why the message is DEFERRED?
What means "not yet authorized" ?

thanks in advance