Hi,
one of my users reported, that she can't send mail to a specific
server. investigated the case, and turned out, that they are using
greylisting. In the server log I have this:
@4000000049bb9e2024521a74 delivery 165528: deferral:
195.56.150.1_does_not_like_recipient./
Remote_host_said
:_451-87.229.73.114_is_not_yet_authorized_to_deliver_mail_from/451-<zol...@interpont.hu
>_to_<magdalena.siw...@hunderground.hu>._Please_try/
451_later_and_read_this_http://projects.puremagic.com/greylisting//Giving_up_on_195.56.150.1./
@4000000049bb9e2024525cdc status: local 0/10 remote 1/20
I read the instructions and they say that this might be because my
mail server does not try to re-deliver the message when a 45x error
code is received from the remote server, and indeed, it didn't try it
again.
What do you think could cause this?
Thanks,
Zolcsi