One of our users' appears to be blacklisted

[outonalimb]

We have a user in our organisation that appears to be on a blacklist. We have 300 users with the suffix abc.com and nobody as an issue sending e-mail apart from joe.bloggs@abc.com. His e-mail always gets rejected or goes into the spam folder at the recipients end.

Can particular users get blacklisted and is there a way of removing him from them?

Regards,

 

[58sniper]

What do the rejected messages say?

Pat Richard MVP
Plan for performance, and capacity takes care of itself. Plan for capacity, and suffer poor performance.

http://www.ucblogs.net/blogs/exchange/

 

[TechyMcSe2k]

Add another email address and make it primary, then see if that one gets blocked as well.

________________________________________
Achieving a perception of high intelligence level can only be limited by your manipulation skills of the Google algorithm!

 

[outonalimb]

Here are the some of the messages he gets back when sending. He his able to send to the majority of his contacts though.


You do not have permission to send to this recipient. For assistance, contact your system administrator.
< mimesweeper.abc.local #5.7.1 SMTP; 550 5.7.1 Unable to relay for john.doe@bdc.com>



jean.doe@fff.com
all relevant MX records point to non-existent hosts

 

[TechyMcSe2k]

your reverseDNS sounds like it is screwed up.

________________________________________
Achieving a perception of high intelligence level can only be limited by your manipulation skills of the Google algorithm!

 

[TechyMcSe2k]

noveyron posted this elsewhere in the Exchange Forum

http://postmaster.aol.com/tools/rdns.html

________________________________________
Achieving a perception of high intelligence level can only be limited by your manipulation skills of the Google algorithm!

 

[58sniper]

I don't have a mimesweeper installation running, but if it's using .local on the outside, it should be no surprise that email is bouncing. rDNS queries would certainly fail for that.

Pat Richard MVP
Plan for performance, and capacity takes care of itself. Plan for capacity, and suffer poor performance.

http://www.ucblogs.net/blogs/exchange/