> When I send an email to this special email server (bgsys.com), the
> syslog file contains the following entries:
> 09:06 16:57 SMTP-(00000654) Trying bgsys.com (0)
> 09:06 16:58 SMTP-(00000654) Connect bgsys.com [207.158.202.110:25] (2)
> 09:06 16:58 SMTP-(00000654) 572 Relay not authorized
This is almost certainly a problem on their end! When I telnet to their SMTP port, I
get the same result (their "welcome message" is really a denial).
The only way I can think of that you might be doing anything wrong is if your IP
address doesn't have a reverse DNS entry. It is possible (but unlikely) that they are
looking it up, and have made a mistake in the error message that they display.
> The support from rapidsite means, that the problem is on my
> mailserver, but my mailserver can send mails to other mail-server.
It isn't a problem on your end, the same thing happens here. They may have an
unusually high level of spam detection (checking reverse DNS on the IP address), but
it sounds like they have something misconfigured. Either way, their welcome message
is wrong (the reason for not allowing the connection is NOT because it doesn't accept
relaying -- it doesn't know at that point if you are sending a local or remote E-mail).
-Scott
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