trying to resolve Mail Delivery Failed errors 550 5.2.1

[mlchris2]

Can someone help me understand if the message below indicates I am using a bad RBL in Exchange or SMS4.0 or if some Blacklist such as SpamCop thinks were some sort of open relay?

Ive changed some info in the error message to protect domains and user email addresses.

-----Original Message-----
> From: Mail Delivery System
> [mailto:Mailer-Daemon@server003.serverquality.com]
> Sent: Thursday, July 06, 2006 9:32 AM
> To: user@domain.com
> Subject: Mail delivery failed: returning message to sender
>
> This message was created automatically by mail delivery software.
>
> A message that you sent could not be delivered to one or more of its
> recipients. This is a permanent error. The following address(es) failed:
>
> user@domain.net
> SMTP error from remote mail server after RCPT
> TO:<user@domain.net>:
> host email.domain.net [10.10.10.10]: 550 5.2.1 Mail from 22.22.22.22
> refused:
> spam site.

I am using RBL's in SMS 4.0, but not in Exchange 2003.

MC

Mark C.

 

[mlchris2]

I think I figured this out. I turned on Heuristic scanning on and set all values to >7... tested and recieved messages.


sorry for the wasted post

Mark C.

 

[mlchris2]

an update... I set the RBL in SMS 4.6 to use 2 BL entries rather than the 6 that were set by the old S.A.

I also set the Heuristic scanning down to 5 and wouldnt you know it....

relieved 99% of the issues.

Mark C.