I have installed Postfix, Dovecot, and Squirrelmail on a CentOS 5.5 machine. In Squirrelmail a user can send mail, but he is not receiving replies. There is nothing relevant in the maillog other than the user's (successful) login attempts. I am at loss, I have been following tutorials such as the Perfect Server [1] series and other Google results, but I cannot get this thing to receive mail. What should I be checking? Thanks! [1] http://www.howtoforge.com/perfect-server-centos-5.5-x86_64-ispconfig-2 -- Dotan Cohen http://gibberish.co.il http://what-is-what.com
On Sun, Oct 17, 2010 at 6:39 PM, Dotan Cohen <dotancohen at gmail.com> wrote:> I have installed Postfix, Dovecot, and Squirrelmail on a CentOS 5.5 > machine. In Squirrelmail a user can send mail, but he is not receiving > replies. There is nothing relevant in the maillog other than the > user's (successful) login attempts. I am at ?loss, I have been > following tutorials such as the Perfect Server [1] series and other > Google results, but I cannot get this thing to receive mail. What > should I be checking? > > Thanks! > > > [1] http://www.howtoforge.com/perfect-server-centos-5.5-x86_64-ispconfig-2 > > -- > Dotan Cohen >You will want to check your DNS and try to telnet to the server. If your server is behind NAT or you run split-dns it would be advisable to try it from another connection. dig mx yourdomain.com telnet smtp.yourdomain.com 25 Of course if your mx record points to something other than smtp.yourdomain.com you will want to use that instead. Ryan
On Mon, Oct 18, 2010 at 22:34, Steve Clark <sclark at netwolves.com> wrote:> Hmm... I am not having any problem connecting from the U.S. > > ping 178.63.65.136 > PING 178.63.65.136 (178.63.65.136) 56(84) bytes of data. > 64 bytes from 178.63.65.136: icmp_seq=1 ttl=49 time=140 ms > 64 bytes from 178.63.65.136: icmp_seq=2 ttl=49 time=142 ms > 64 bytes from 178.63.65.136: icmp_seq=3 ttl=49 time=138 ms > > telnet 178.63.65.136 25 > Trying 178.63.65.136... > Connected to 178.63.65.136. > Escape character is '^]'. > ^] > telnet> close > Connection closed. >Exactly the problem! It pings fine (so I know that connections can be established over the physical wires) and on the IP address telnet answers. However, telnet to port 25 (smtp) with the domain name fails. Why could that be? -- Dotan Cohen http://gibberish.co.il http://what-is-what.com