________________________________________ From: centos-bounces at centos.org <centos-bounces at centos.org> on behalf of Mike McKoy <mikemckoy at gmail.com> Sent: 20 May 2015 11:41 To: centos at centos.org Subject: [CentOS] I Have Multiple Ips But Can Only Telnet to One Interface. Not the subinterface. How to Fix? Hi guys, I have multiple IPs bound to my Centos 6.6 box but I can only telnet to one IP. Any ideas on what to do? I've searched the internet so far with every keyword I can think of to no avail. I can see that postfix is only listening on the first IP and to localhost. The IP I cannot smtp to is on ETH0:1. I can access it via port 80 (web traffic) but the connection is refused if i try to telnet. [image: :shock:] The domain I can telenet to is mymodeltalk.com The domain I cannot telenet to is inform.mymodeltalk.com <snip> ----------------------- Hi, At a rough guess it's because those domains are pointing to different IPs: inform.mymodeltalk.com. 3600 IN A 52.0.33.25 mymodeltalk.com. 600 IN A 52.0.148.79 Also you probably should use SSH to connect to the server and not telnet, unless there's a *really* good reason to use telnet. Fix the DNS so they're both pointing to the same server and I reckon you'll be good. Cheers, Matthew Moore