This is a really bizarre situation. I have not been able to send mail to a specific Windows mail server at cw2.coreweb.com from a Postfix server on Debian. I cannot telnet to port 25 on the Windows machine from any Debian box that I have. I can telnet to the machine from Red Hat and Windows machines. When I send a telnet request from the Debian box I don't get a reply and the telnet request times out.
What makes this particularly puzzling (to me, at least) is that the Debian, Red Hat, and Windows boxes that I try to telnet from can all be in the same subnet so it doesn't seem that it could be a firewall issue on the other end. An example follows: 28206 2.279791 linux-dev.y2m.com -> 66.151.230.133 DNS Standard query AAAA cw2.coreweb.com 28428 2.297725 linux-dev.y2m.com -> 66.151.230.133 DNS Standard query A cw2.coreweb.com 28895 2.335775 66.151.230.133 -> linux-dev.y2m.com DNS Standard query response PTR cw2.coreweb.com 28903 2.336422 linux-dev.y2m.com -> cw2.coreweb.com TCP 33038 > telnet [SYN, ECN, CWR] Seq=3827497024 Ack=0 Win=5840 Len=0 66085 5.335152 linux-dev.y2m.com -> cw2.coreweb.com TCP 33038 > telnet [SYN, ECN, CWR] Seq=3827497024 Ack=0 Win=5840 Len=0 140825 11.334452 linux-dev.y2m.com -> cw2.coreweb.com TCP 33038 > telnet [SYN, ECN, CWR] Seq=3827497024 Ack=0 Win=5840 Len=0 Any suggestions, ideas, or comments like "Hey stupid, did you think to look at..." would be greatly appreciated. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
