Yep, im seeing a similar error - "too many invalid recipients from this host" Aug 19 13:51:24 sol2 qmail: 1187488284.019447 delivery 21065: deferral: Connected_to_124.108.96.67_but_greeting_failed./Remote_host_said:_421_Messag e_from_(203.89.183.2)_temporarily_deferred_-_4.16.50._Please_refer_to_http:/ /help.yahoo.com/help/us/mail/defer/defer-06.html/ And... Aug 19 13:34:16 sol2 qmail: 1187487256.168245 delivery 21016: deferral: Connected_to_124.108.96.67_but_sender_was_rejected./Remote_host_said:_451_VS 5-MF_Excessive_unknown_recipients_-_possible_Open_Relay_http://help.yahoo.co m/help/us/mail/spam/spam-18.html_(#4.4.5)_998sherm27(a)jenkinsbrush.com/ -----Original Message----- From: Barry Murphy [mailto:barry(a)unix.co.nz] Sent: Wednesday, August 22, 2007 12:04 PM To: nznog(a)list.waikato.ac.nz Subject: [nznog] Xtra email - mx1.tnz.mail.yahoo.com Hey Guys, Anyone else running a large mailserver seing these errors? I've gone to the URL, clicked the form to fill out but it wants me to signup, which I refuse to do, mail does finally go through in batchs however queues for a number of hours, then stops all new messages again and then lets batchs through again. 2007-08-22 11:59:22 1INdcx-0006E3-P3 SMTP error from remote mail server after initial connection: host mx1.tnz.mail.yahoo.com [124.108.96.67]: 421 Message from (60.234.68.30) temporarily deferred - 4.16.50. Please refer to http://help.yahoo.com/help/us/mail/defer/defer-06.html 2007-08-22 11:59:22 1INdcx-0006E3-P3 == xxxxxx(a)xtra.co.nz <xxxx(a)xxxx.com> R=lookuphost T=remote_smtp defer (0): SMTP error from remote mail server after initial connection: host mx1.tnz.mail.yahoo.com [124.108.96.67]: 421 Message from (60.234.68.30) temporarily deferred - 4.16.50. Please refer to http://help.yahoo.com/help/us/mail/defer/defer-06.html Regards Barry Murphy _______________________________________________ NZNOG mailing list NZNOG(a)list.waikato.ac.nz http://list.waikato.ac.nz/mailman/listinfo/nznog