On 17 Mar 2015, at 8:35, Marek Salwerowicz wrote:
Hi list,
Yesterday I was informed by Users, that they can't send e-mails to one
of the banking institutions (so it's a little 'urgent' in businesses
manner).
The mails are rejected by Messagelabs / Symantec Cloud System, but do
not provide any relevant information:
*Diagnostic information for administrators:*
Generating server: ccd1.root4.net
first_name.last_n...@bankdomain.com
#550 5.7.1 Delivery not authorized, message refused ##
550 is usually a reply code to the 'RCPT' command, so this reply came
before your server sent the message headers or body. That limits the
range of possible causes. However, '5.7.1' is an extended response code
which indicates that this is not due to some standard well-known type of
failure (e.g. a non-existent recipient would be 5.1.1) but is rather due
to a local policy. The following text p[art of the message could have
provided an explanation of that policy, but the receiving site has
chosen to provide no explanation.
Anyone other than MessageLabs/Symantec who tries to convince you of a
specific cause of the rejection is GUESSING based on the information you
provide and (maybe) their own experience with similar rejections. As
such, people on this list might be able to provide clues and conjecture,
but we can't give you certainty and we can only GUESS well if you
provide true information about the rejection.
Original message headers:
Return-Path: <user@my_domain.pl>
That is an intentional and pointless lie about what that header held so
I can only assume that the rest of the headers are also lies, and hence
entirely worthless. The only thing you should ever munge out of mail
headers or logs when seeking deliverability help is address local parts.
Any other adulteration of evidence only serves to reduce the help that
others can provide.
I've already sent e-mails to postmas...@bankdomain.com, but not sure
if anyone is going to answer it..
Do you have any ideas / online tools so I could check my MTA
configuration ?
You need an answer to the question "Why doesn't MessageLabs like my
server?" and there is no truly reliable way to answer that question
without the help of MessageLabs, no strong guess possible without you
providing concrete details that you have chosen to withhold. No "online
tool" is going to assist.
BTW: The reverse DNS and SPF record are set correctly
Many people have made similar claims here, only to be discovered to be
untrustworthy in that judgment.
