No its not unreasonable, continue to block it and we will ask some interesting questions in the morning. Regards Paul Tinson -----Original Message----- From: nznog-bounces(a)list.waikato.ac.nz [mailto:nznog-bounces(a)list.waikato.ac.nz] On Behalf Of Don Gould Sent: Monday, 6 December 2010 7:38 p.m. To: nznog Subject: [nznog] How are people fixing xtra mail issues this week? Dec 6 05:25:25 mx postfix/smtpd[8120]: NOQUEUE: reject: RCPT from unknown[202.27.184.223]: 450 4.1.8 <xtra(a)sf1567.admin.xtra.co.nz>: Sender address rejected: Domain not found; from=<xtra(a)sf1567.admin.xtra.co.nz> to=<dond(a)bowenvale.$ The Xtra broadband l1 help desk is trying to send me some documentation about settings in one of their routers on one of their customers sites. My mail system rejects stuff that doesn't resolve. Is that considered unreasonable? D _______________________________________________ NZNOG mailing list NZNOG(a)list.waikato.ac.nz http://list.waikato.ac.nz/mailman/listinfo/nznog