sendmail not answering except for 'localhost'
Posted on 2001-06-07
We are setting up a replacement server for out current one who will be retiring very soon (and thus we decided why not start from scratch). At the same time we setup a firewall which the enw server will be behind. The firewall is set up to do NAT and successfully routes pop3, imap, httpd and ssh through to the new server and smtp is set up in the exact way. In reality this firewall should have nothing to do with the problem, but i mention it just in case.
The server is RedHat 7.1, the IP of the machine is for the LAN 10.1.1.198. When I am on the local machine and i do a:
telnet localhost 25
i will get connected...same goes for telnetting to 127.0.0.1, however if I attempt to telnet to 10.1.1.198 on port 25 it will say:
telnet: Unable to connect to remote host: Connection refused
the machine had ipchains set up on it as secondary backup from the main firewall but i completely removed that just in case that was the problem. The same error happens when I try to telnet to it with it's real internet ip, with the domain name etc, and this is tested from remote boxen and the local box itself, the only thing it likes is localhost and 127.0.0.1
if you have any clue what this problem is, let me know.