[afnog] Cannot connect to remote pop3 server

Shepherd Magumo shepherd at snowball.co.za
Wed Feb 18 21:02:01 UTC 2009


>From my desktop my tracert results are not showing any intersecting
network unless if I am missing something. To eliminate the possibility
of there being an issue with my private network, I tested ISP2
connection via RDP on a seperate network.

The two ISPs that we connect through are big ISPs in .za, is there a
possible that .za IP blocks are being pop3 filtered on the zonnet.nl
server? If yes, what could be the reason for such a move?

Also background info, the pop3 server used to work fine till about one
and half months ago.

C:\Documents and Settings\ISP1>tracert pop3.zonnet.nl

Tracing route to pop3.zonnet.nl [62.58.50.236]
over a maximum of 30 hops:

  1     1 ms     2 ms     1 ms  192.168.88.1
  2     2 ms     1 ms     2 ms  192.168.20.254
  3     3 ms     3 ms     3 ms  196.36.x.x
  4    36 ms    35 ms    34 ms  196.37.240.121
  5    35 ms    33 ms    35 ms  cdsl1-rba-vl144.isdsl.net [196.35.63.65]
  6    56 ms    35 ms    65 ms  core2b-rba-7600-gi1-0-10.ip.isnet.net [168.209.1
.182]
  7   212 ms   203 ms   203 ms  168.209.161.236
  8   203 ms   201 ms   209 ms  168.209.224.67
  9   205 ms   204 ms   202 ms  core2a-dock-gi1-0-19-22.ip.isnet.net [168.209.16
3.11]
 10   203 ms   203 ms   215 ms  core2b-dock-gi0-0-2.ip.isnet.net [168.209.246.3]

 11   206 ms   206 ms   208 ms  ae0-1302-xcr1.lsw.cw.net [166.63.211.205]
 12   206 ms   207 ms   208 ms  lon2-core.gigabiteth3-0.swip.net [195.66.224.87]

 13   208 ms   207 ms   207 ms  ams17-core-1.pos15-0-0.swip.net [130.244.192.13]

 14   211 ms   215 ms   209 ms  130.244.49.206
 15   212 ms   212 ms   212 ms  ams16-core-1.gigabiteth13-1-0.swip.net [130.244.
49.197]
 16   211 ms   211 ms   207 ms  br01tc2.versatel.net [130.244.200.130]
 17     *        *        *     Request timed out.
 18     *        *        *     Request timed out.


C:\Documents and Settings\ISP2>tracert pop3.zonnet.nl

Tracing route to pop3.zonnet.nl [62.58.50.236]
over a maximum of 30 hops:

  1     1 ms     1 ms     1 ms  192.168.88.1
  2     2 ms     2 ms     2 ms  192.168.20.254
  3     2 ms     3 ms     2 ms  196.25.x.x
  4     4 ms     4 ms     4 ms  wblv-ip-esr-2-wan.telkom-ipnet.co.za [196.25.165
.141]
  5   164 ms   164 ms   164 ms  wblv-ip-lir-1-pos-7-2-2.telkom-ipnet.co.za [196.
43.18.6]
  6   165 ms   164 ms   165 ms  vl340.mpd01.lon01.atlas.cogentco.com [149.6.2.19
3]
  7   174 ms   231 ms   207 ms  te3-1.mpd02.lon01.atlas.cogentco.com [130.117.2.
26]
  8   187 ms   173 ms   173 ms  te3-4.ccr01.ams03.atlas.cogentco.com [130.117.1.
117]
  9   173 ms   173 ms   173 ms  te4-1.mpd01.ams03.atlas.cogentco.com [130.117.48
.62]
 10     *        *        *     Request timed out.
 11     *        *        *     Request timed out.

regards,

Shepherd



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