SMTP being blocked by certain providers

Dagmar d'Surreal dagmar.wants at
Mon Oct 11 14:17:27 PDT 2004

On Sun, 2004-10-10 at 22:25 -0500, DJ Lucas wrote:
> Hey guys and gals, I've been getting a few bounce messges lately from 
> AOL and Outblaze servers.  Specifically these nice tidbits:
> ------------------------------------------------------------------------
> Oct 10 21:45:39 pinski postfix/smtp[14392]: 151F91BA88: 
> to=<budsangels at>,[], 
> delay=108264, status=deferred (host[] 
> refused to talk to me: 554- (RTR:BB) 
> 554- AOL does not 
> accept e-mail transactions from dynamic or residential 554- IP 
> addresses. 554  Connecting IP:
> Oct  9 15:41:20 pinski postfix/smtp[6894]: 151F91BA88: 
> to=<jd_lucas at>,[], 
> delay=5, status=bounced (host[] 
> said: 554 EMail from mailserver at is refused. See 
> (in reply to RCPT TO command))
> ------------------------------------------------------------------------
> Rather than constantly keeping up with the logs for the next few weeks, 
> (well I could setup a job and script it I suppose) I was wondering if 
> there is by chance is a list of providers blocking smtp from dynamic 
> hosts, or better an automatic way to handle error 554?  If no for both, 
> then I'd like to start up a list someplace.  My 'sever' is currently on 
> swbell's network, so here is a quick excerpt from /etc/postfix/transports:
> I'm slowly becoming a very curious controll freak, ;-) so pushing 
> everything off to swbell is very undesireable.  Any suggestions or 
> comments beyond that are much appreciated.

I know it's undesireable.  All the Bells, in particular, suck giant
phallus for reliability, but...  I am having to deal with the same issue
from being a Comcast user.  The best advice I can give you is to
configure your MTA to use the outgoing SMTP server swbell provides as
the relay agent (Sendmail users, this would be a SMART_RELAY, if I'm not

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