[Postfixbuch-users] aol.com connection Problem

[Andreas Meyer]

Andreas Winkelmann <ml at awinkelmann.de> schrieb:

> > Nov 21 18:51:23 cherry postfix/smtp[12779]: 
> > 5871082E6: to=<xxxxxxx at aol.com>, relay=none, delay=0.32, delays=0.
> > 18/0.13/0.01/0, dsn=5.4.4, status=bounced (Host or domain name not found.
> > Name service error for name=aol.com type=A: Host not found)
> 
> Er findet keinen a-Record zu aol.com. Mal beiseite gemnommen, dass es 
> merkwürdig ist, dass er das überhaupt versucht, sieht es danach aus, dass Du 
> DNS-Probleme hast. Prüf das mal. Hast Du einen DNS-Server?

Das mit dem a-Record hat mich auch verwundert. Mein Mailserver, das
unbekannte Wesen. Was veranlaßt Postfix auf einen A-Record zu prüfen?
Ja, ich habe einen eigenen DNS-Server, der die Root-Server befragt.

> > Ein telnet hingegen funktioniert:
> >
> > # telnet mailin-02.mx.aol.com 25
> > Trying 64.12.137.89...
> > Connected to mailin-02.mx.aol.com.
> > Escape character is '^]'.
> > 220-rly-ma09.mx.aol.com ESMTP mail_relay_in-ma09.7; Wed, 21 Nov 2007
> > 13:57:25 -0500 220-America Online (AOL) and its affiliated companies do not
> > 220-     authorize the use of its proprietary computers and computer
> > 220-     networks to accept, transmit, or distribute unsolicited bulk
> > 220-     e-mail sent from the internet.  Effective immediately:  AOL
> > 220-     may no longer accept connections from IP addresses which
> > 220      have no reverse-DNS (PTR record) assigned.
> > ehlo anup.de
> > 250-rly-ma09.mx.aol.com cherry.anup.de
> > 250 HELP
> > quit
> > 221 SERVICE CLOSING CHANNEL
> > Connection closed by foreign host.
> 
> Hast Du das mehrmals probiert? Evtl. ist was überlastet. 

mailin-02.mx.aol.com connected manchmal und manchmal schließt
er gleich wieder die Verbindung, das macht mailin-03.mx.aol.com
nicht:

# telnet mailin-02.mx.aol.com 25
Trying 64.12.137.89...
Connected to mailin-02.mx.aol.com.
Escape character is '^]'.
220-rly-ma06.mx.aol.com ESMTP mail_relay_in-ma06.7; Wed, 21 Nov 2007 16:18:50 -0400
220-America Online (AOL) and its affiliated companies do not
220-     authorize the use of its proprietary computers and computer
220-     networks to accept, transmit, or distribute unsolicited bulk
220-     e-mail sent from the internet.  Effective immediately:  AOL
220-     may no longer accept connections from IP addresses which
220      have no reverse-DNS (PTR record) assigned.
quit
221 SERVICE CLOSING CHANNEL
Connection closed by foreign host.
# telnet mailin-02.mx.aol.com 25
Trying 64.12.137.168...
Connected to mailin-02.mx.aol.com.
Escape character is '^]'.
Connection closed by foreign host.

-- 
   Andreas Meyer
   
Mein öffentlicher GPG-Schlüssel unter:
http://gpg-keyserver.de/pks/lookup?search=anmeyer&fingerprint=on&op=index