14 Apr
2008
14 Apr
'08
11:14 a.m.
On Thu, Apr 10, 2008 at 10:30 AM, Barry Shein <bzs@world.std.com> wrote:
<SNIP>
421 4.7.0 [TS01] Messages from MAILSERVERIP temporarily deferred due to user complaints - 4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html
(where MAILSERVERIP is one of our mail server ip addresses)
Domainkeys solved my problem. I had the exact same thing happen, sometimes it wouldn't even make it to the box. Setup domain keys, and my problem went away.