/To test the connectivity, try using a TELNET client to 173.194.78.26 port 25 and see what connections happen, and if you get any rejection messages. That will tell you more about what is going on than traceroute will, in this instance./
Installed telnet on my server and opened port 23 in my firewall. Tried gmail smtp address again and also mx4.hotmail.com. Both connections time out. This got me thinking. Viktor stated I need to use port 25 to connect to other mailservers. Telent uses port 23 and yet I connected to both hotmail and gmail on port 25 using port 23 from my home pc. /You say your hosting provider is blocking port 25. I am puzzled that you're suprised when you're unable to make outbound connections to port 25. readme_directory = /usr/share/doc/postfix-2.10.1/README_FILES sample_directory = /usr/share/doc/postfix-2.10.1/samples/ >From all the how to guides on the internet I came to the conclusion that mail has to be received on port 25 (mandatory) but mail can sent form any port. Guides on the internet showing how to bypass port 25 using ports 465, 587 and 2525 to send mail (although they have not worked for me). If you are saying that email has to be sent on Port 25 I have obviously misinterpreted the whole smtp thing and the concept of submission. I did look at the postfix readme files over a year ago and found them (like many server owners) overly complex and cryptic. "postfix outbound default to port 25, but hotmail see your ip as dynamic" I have no idea why as I have a static IP. I configured this myself changing /etc/resolv.conf /etc/hosts and /etc/sysconfig/network/scripts/ifcfg-eth0. I did have port 25 unblocked by my VPS provider thinking I could use another port. I will ask them to open it again. -- View this message in context: http://postfix.1071664.n5.nabble.com/Postfix-Outward-Connections-Time-out-What-I-have-learned-so-far-tp75691p75700.html Sent from the Postfix Users mailing list archive at Nabble.com.
