Trying to open a ticket with Rogers but they say nothing is wrong. Seems to be some DNS issue at RIM? Their MX handlers are rejecting mail saying the sending domain does not exist... 0[marble]# host -tmx rogers.blackberry.net rogers.blackberry.net mail is handled by 10 mx01.bis.na.blackberry.com. rogers.blackberry.net mail is handled by 10 mx02.bis.na.blackberry.com. rogers.blackberry.net mail is handled by 10 mx03.bis.na.blackberry.com. rogers.blackberry.net mail is handled by 10 mx04.bis.na.blackberry.com. 0[marble]# telnet mx01.bis.na.blackberry.com 25 Trying 216.9.248.32... Connected to mx01.bis.na.blackberry.com. Escape character is '^]'. 220 as64.bis.na.blackberry.com ESMTP HELO marble.sentex.ca 250 as64.bis.na.blackberry.com MAIL From: <postmaster@rim.com> 451 #4.1.8 Domain of sender address <postmaster@rim.com> does not resolve MAIL From: <postmaster@rogers.com> 451 #4.1.8 Domain of sender address <postmaster@rogers.com> does not resolve 421 Exceeded allowable connection time, disconnecting. Connection closed by foreign host. 1[marble]# 0[marble]# host -tmx telus.blackberry.net telus.blackberry.net mail is handled by 10 mx01.bis.na.blackberry.com. telus.blackberry.net mail is handled by 10 mx02.bis.na.blackberry.com. telus.blackberry.net mail is handled by 10 mx03.bis.na.blackberry.com. telus.blackberry.net mail is handled by 10 mx04.bis.na.blackberry.com. 0[marble]# telnet mx01.bis.na.blackberry.com 25 Trying 216.9.248.32... Connected to mx01.bis.na.blackberry.com. Escape character is '^]'. 220 as18.bis.na.blackberry.com ESMTP HELO marble.sentex.ca 250 as18.bis.na.blackberry.com MAIL From: <postmaster@blackberry.net> 250 sender <postmaster@blackberry.net> ok QUIT 221 as18.bis.na.blackberry.com Connection closed by foreign host. 1[marble]# telnet mx01.bis.na.blackberry.com 25 Trying 216.9.248.32... Connected to mx01.bis.na.blackberry.com. Escape character is '^]'. 220 as08.bis.na.blackberry.com ESMTP HELO marble.sentex.ca 250 as08.bis.na.blackberry.com MAIL From: <postmaster@telus.com> 451 #4.1.8 Domain of sender address <postmaster@telus.com> does not resolve -------------------------------------------------------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, mike@sentex.net Providing Internet since 1994 www.sentex.net Cambridge, Ontario Canada www.sentex.net/mike