Marco Barreno <[EMAIL PROTECTED]> writes: > Can someone with admin access to the list machine send me the SMTP > logs for one of the duplicated messages? I'm working in the Gmail > group at Google for the summer and I can have someone try to diagnose > the problem from this end. The full SMTP logs would be helpful.
I don't have access there, but I can fill in part of the puzzle. At least one of the opemoko machines at 88.198.124.203 opens an smtp connection back to the sending domain to verify the sender address of any incoming message. The smtp-back machine has messed up DNS. The claimed rDNS for that IP is "openmoko.org" but the forward DNS check for that "openmoko.org" doesn't list 88.198.124.203 as a valid address. If the sending machine is checking for spammers claiming a bunk DNS name will reject 88.198.124.203's SMTP verify. The opemmoko machine will then interpret that failed smtp verify attempt as the verified address not existing and will decline the initial incoming transfer. In short, folks really need to check the forward and backward DNS and make sure it is consistent, especially if that machine tries open an outgoing SMTP connection (such as the attempted verification). Jul 9 12:48:17 arbol postfix/smtp[26802]: 29AF91C98001: to=<[EMAIL PROTECTED]>, relay=sita.openmoko.org[88.198.124.203]:25, delay=6.2, delays=0.18/0.04/5.4/0.64, dsn=4.0.0, status=deferred (host sita.openmoko.org[88.198.124.203] said: 451 Could not complete sender verify callout (in reply to RCPT TO command)) Jul 9 12:55:35 arbol postfix/smtpd[26864]: warning: 88.198.124.203: address not listed for hostname openmoko.org Jul 9 12:55:35 arbol postfix/smtpd[26864]: connect from unknown[88.198.124.203] Jul 9 12:55:36 arbol postfix/smtpd[26864]: NOQUEUE: reject: RCPT from unknown[88.198.124.203]: 554 5.7.1 Client host rejected: cannot find your hostname, [88.198.124.203]; from=<> to=<[EMAIL PROTECTED]> proto=SMTP helo=<sita.openmoko.org> Jul 9 12:55:36 arbol postfix/smtpd[26864]: disconnect from unknown[88.198.124.203] Jul 9 12:55:38 arbol postfix/smtp[26863]: 29AF91C98001: to=<[EMAIL PROTECTED]>, relay=sita.openmoko.org[88.198.124.203]:25, delay=447, delays=441/0.05/1.2/4.3, dsn=5.0.0, status=bounced (host sita.openmoko.org[88.198.124.203] said: 550-Verification failed for <[EMAIL PROTECTED]> 550-Called: 64.142.50.224 550-Sent: RCPT TO:<[EMAIL PROTECTED]> 550-Response: 554 5.7.1 Client host rejected: cannot find your hostname, [88.198.124.203] 550 Sender verify failed (in reply to RCPT TO command)) -wolfgang -- Wolfgang S. Rupprecht http://www.wsrcc.com/wolfgang/ IPv6 on Fedora 7 http://www.wsrcc.com/wolfgang/fedora/ipv6-tunnel.html _______________________________________________ OpenMoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
