North American Network Operators Group

Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

RE: Blocked port 25?

  • From: Michel Py
  • Date: Thu Aug 19 10:01:58 2004

Looks like your personal email has issues too...

> Your message did not reach some or all of the intended
> recipients. Subject:	RE: Blocked port 25? Sent:
> 8/19/2004 6:49 AM The following recipient(s) could not
> be reached: '[email protected]' on 8/19/2004
> 6:49 AM The destination server for this recipient could
> not be found in Domain Name Service (DNS).

>nslookup
>Default Server:  localhost
>Address:  127.0.0.1
>set type=ns
>byronhicks.com
>Server:  localhost
>Address:  127.0.0.1
>*** localhost can't find byronhicks.com: Non-existent domain


Is your mail server 128.123.3.5?

Looks like I can't get to it from home; I'm on one of these netblocks
that are marked as dynamic IPs although it also serves static IP
addresses such as myself. I can send UDP DNS queries and get replies
to/from it just fine though, so it's likely not a routing issue but
indeed a filtering issue.

Conventional wisdom says that the problem is either at your end or
somewhere in Time Warner, and possibly because your mail server is also
a DNS server. Setup a machine that listens on 25 on another IP on the
same subnet, and let me know the IP, I'll give it another shot.

Michel.


Tracing route to dns1.NMSU.Edu [128.123.3.5] over a maximum of 30 hops:
  3     9 ms     8 ms     9 ms  dist1-vlan60.scrm01.pbi.net
[64.171.152.130]
  4     9 ms     8 ms     9 ms  bb1-g8-3-0.scrm01.pbi.net
[64.171.152.247]
  5    13 ms    13 ms    13 ms  bb1-p12-3.sntc01.sbcglobal.net
[151.164.188.121]
  6    12 ms    13 ms    13 ms  bb2-p9-0.sntc01.sbcglobal.net
[151.164.40.166]
  7    13 ms    13 ms    13 ms  core2-p6-1.crscca.sbcglobal.net
[151.164.241.193]
  8    13 ms    13 ms    13 ms  bb1-p8-0.crscca.sbcglobal.net
[151.164.40.62]
  9    14 ms    14 ms    14 ms  ex1-p13-0.pxpaca.sbcglobal.net
[151.164.190.206]
 10    13 ms    13 ms    14 ms  as4323-twtelecom.pxpaca.sbcglobal.net
[151.164.248.110]
 11    15 ms    15 ms    16 ms  66.192.250.45
 12    62 ms    62 ms    61 ms  core-01-so-0-0-0-0.phnx.twtelecom.net
[168.215.55.114]
 13    72 ms    72 ms    73 ms  dist-01-so-2-3-0-0.albq.twtelecom.net
[66.192.251.243]
 14    72 ms    72 ms    73 ms  66.192.247.133
 15     *        *        *     Request timed out.
 16     *        *        *     Request timed out.
 17     *        *        *     Request timed out.