Well this is a barrel of laughs…

“The problem is that the ORDB blacklist (which was decommissioned on Dec 18 2006) has been reactivated, but in such a way that it returns a positive match for every query. The operators have done this in order to prompt people who were still using the list to remove it from their configuration.”

Source: https://forums.whirlpool.net.au/forum-replies-archive.cfm/944800.html

At the moment this is effecting our exchange servers, and it’s unclear if this is a legacy smtp event or part of the anti spam software…

Everything is being bounced, needless to say I can tell you working for a company that has over a million emails a day this is NOT GOOD!

If your clients are receiving bounce backs I suggest you contact them immediately, and inform them of the situation.

ORDB SORT YOUR ACT OUT!

I will update as I find a workaround!

UPDATE!!!!

For exchnage 2003 use the following article as a guide (Thanks KERM!):

https://www.msexchange.org/tutorials/Blacklist_Support_Exchange_2003.html

Remove ORDB! (see below)

(UPDATE: OR remove wirehub: see new post)

Slashdot article