On Wed, Aug 05, 2020 at 11:11:45AM -0300, SysAdmin wrote in
<cagudtnm1ygrpv+4u68ptgfjskojo0ecsmhzcqovsx59rzuh...@mail.gmail.com>:
I think I have found what I need, I must increase the value of the
parameter "transport_retry_time".
I will increase the value and I will see how it behaves thanks to everyone
for helping me, take good care
What matters most is that you are happy now, even though I feel you
still misunderstand the problem you are dealing with (which IMHO is
not a problem at all). As I understand it, the following happens:
1) Your mail server attempts to deliver mail
2) The receiving mail server gives a temporary failure (greylisted)
3) Your mail server tries the next mail server which has the same
priority on the receiving end
4) One of three things can happen now:
a) That next mail server either does not employ greylisting, or your
mailserver has contacted it before and succesfully delivered a
message, and your message is accepted. End result: Postfix removes the
message from the queue as it has been succesfully delivered, and you
should be happy.
b) All other mail servers, as configured by the receiving end,
greylist your message for 5 minutes. In that case postfix backs off
and tries again later. The default for this (if I am not mistaken) is
300 seconds, after which postfix tries again and your message should
be accepted. End result: You should be happy.
c) If for some reason postfix tries again within the 300 seconds, it
will be greylisted again and postfix will back off again, rinse,
repeat from step 1. End result: The mail gets delivered and you should
be happy.
The only way I see this not working is when either you have messed
with the default settings, in which case I'd advise you not to do so,
or the receiving end has misconfigured their side, in which case it is
not your problem to fix.
TLDR: There is no problem and your mail will get delivered, possibly
with some delay due to policies on the receiving side.
Kind regards,
Remco
