Hi all Am after some advice please. We've recently taken possession of a shiny new IP block from APNIC - 118.67.192.0/21 so that we can give our current IP's back to our upstream. As part of the renumbering processes we're taking the opportunity of building a new mail server as the old one is getting a little tired. However we've run into a minor snag: The IP of our new mail server mta1.waspnet.co.nz 118.67.193.2 and this being explicitly refused connection on port 25 to many of the major providers such as Gmail, Excite and Hotmail - (In fact the entire range is but am only concerned with one at this stage) Apr 1 13:25:01 mta1 postfix/smtp[8807]: connect to gmail-smtp-in.l.google.com[72.14.213.27]: Connection refused (port 25) Apr 1 13:25:01 mta1 postfix/smtp[8807]: connect to alt1.gmail-smtp-in.l.google.com[74.125.67.27]: Connection refused (port 25) Apr 1 13:25:01 mta1 postfix/smtp[8807]: connect to alt2.gmail-smtp-in.l.google.com[74.125.47.27]: Connection refused (port 25) Apr 1 13:25:01 mta1 postfix/smtp[8807]: connect to alt3.gmail-smtp-in.l.google.com[74.125.113.27]: Connection refused (port 25) Apr 1 13:25:01 mta1 postfix/smtp[8807]: connect to alt4.gmail-smtp-in.l.google.com[209.85.229.27]: Connection refused (port 25) Apr 1 13:25:01 mta1 postfix/smtp[8808]: connect to mx2.hotmail.com[65.55.92.184]: Connection refused (port 25) Apr 1 13:25:01 mta1 postfix/smtp[8808]: connect to mx1.hotmail.com[65.54.188.110]: Connection refused (port 25) Apr 1 13:25:01 mta1 postfix/smtp[8808]: connect to mx2.hotmail.com[65.54.188.126]: Connection refused (port 25) Apr 1 13:25:01 mta1 postfix/smtp[8808]: connect to mx4.hotmail.com[65.54.188.110]: Connection refused (port 25) Apr 1 13:25:01 mta1 postfix/smtp[8808]: connect to mx3.hotmail.com[65.54.188.126]: Connection refused (port 25) Other providers such as TCL are just timing out on the connection attempt /var/log/maillog:Mar 29 08:27:29 mta1 postfix/smtp[28902]: connect to mx.clear.net.nz[203.97.33.212]: Connection timed out (port 25) Telnet to port 25 produces the same results Yahoo interestingly isn't blocking it and other a few other providers are letting us through The frustrating thing for me is that once I got SPF & rDNS sorted we had full connectivity to all of these on the 17th & 18th March. Then on the 19th we started to be blocked again. I've filled in online forms with the big three to no avail. I've checked SORBS, Senderbase, etc and I can see no reason why we should not get through. Any suggestions/assistance as to what I can try next would be greatly appreciated. We're currently using it for sending team.waspnet.co.nz mail Cheers Jodi PS - We also have an IPv6 block which I am waiting upstream advertisement PPS - There will be beer J Jodi Thomson Network & Systems Engineer Ph +64-6-8355800 Fax +64-6-8355811 Mob +64-21-903712 E-Mail jodi(a)team.waspnet.co.nz www.waspnet.co.nz http://www.waspnet.co.nz/
