Beating my head against the email wall - cannot receive email

chort · 09-02-2008, 01:34 AM

Quote:

Originally Posted by dazed-and-confused

Definitely not firewalled, but apparently unable to receive connections.

Just because you aren't running a firewall doesn't mean there isn't a firewall between the Internet and your server.

Code:

[chort@abydos ~]$ dig mx grimdar.com

; <<>> DiG 9.3.2-P1 <<>> mx grimdar.com
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25467
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 1

;; QUESTION SECTION:
;grimdar.com.                   IN      MX

;; ANSWER SECTION:
grimdar.com.            86400   IN      MX      50 duff.grimdar.com.

;; AUTHORITY SECTION:
grimdar.com.            86400   IN      NS      c.ns.joker.com.
grimdar.com.            86400   IN      NS      b.ns.joker.com.
grimdar.com.            86400   IN      NS      a.ns.joker.com.

;; ADDITIONAL SECTION:
duff.grimdar.com.       86400   IN      A       68.57.212.10

;; Query time: 119 msec
;; SERVER: 172.22.2.26#53(172.22.2.26)
;; WHEN: Mon Sep  1 23:28:32 2008
;; MSG SIZE  rcvd: 123

[chort@abydos ~]$ telnet duff.grimdar.com 25
Trying 68.57.212.10...
telnet: connect to address 68.57.212.10: Connection timed out

Either you haven't forwarded port 25/tcp to your mail server properly, or your ISP or broadband router is blocking port 25/tcp inbound.

dazed-and-confused · 09-02-2008, 05:14 AM

Quote:

Originally Posted by chort

Just because you aren't running a firewall doesn't mean there isn't a firewall between the Internet and your server.

...snip...

Either you haven't forwarded port 25/tcp to your mail server properly, or your ISP or broadband router is blocking port 25/tcp inbound.

chort, thanks for the reply. I ran netstat and got this result:

Code:

rolf@duff:~$ netstat -l |grep smtp
tcp        0      0 *:smtp                  *:*                     LISTEN     
rolf@duff:~$

Should one of those 0s say something like '127.0.0.1', or does this netstat look ok?

I have emailed comcast support and asked them to confirm whether or not they block port 25.