View Single Post
  #4  
Old 23rd August 2012, 09:21
till till is offline
Super Moderator
 
Join Date: Apr 2005
Location: Lüneburg, Germany
Posts: 35,778
Thanks: 821
Thanked 5,334 Times in 4,184 Posts
Default

Thats ok, postfix is listening on all interfaces.

So the connecion must be blocked by a firewall, this can be the firewall on the server itself. Test it with:

iptables -L

A firewall in a router in front of the server or a firewall of your internet acccess provider. Many providers block port 25 to avoid spam, so if your server is not located in a datacenter, then its likely that your provider blocks the smtp connections.
__________________
Till Brehm
--
Get ISPConfig support and the ISPConfig 3 manual from ispconfig.org.
Reply With Quote