dcc not working

Gary McLean Gary.McLean@instinet.co.uk
Fri Jun 1 09:46:59 UTC 2007


Hey Rob,

This may be a stupid question but a starting point, but is the UDP Port 
6277 open outbound on your firewall?

As you see on my mail server, you get a UDP Packet back.

[root@bstpmail01 ~]# tcpdump port 6277
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes
10:43:16.686540 IP bstpmail01.instinet.co.uk.43155 > 
birubiru.to.infn.it.6277: UDP, length 206
10:43:16.805724 IP birubiru.to.infn.it.6277 > 
bstpmail01.instinet.co.uk.43155: UDP, length 112

Gary



"Robert Welz"  
Sent by: dcc-admin@rhyolite.com
01/06/2007 10:26

To
dcc@rhyolite.com
cc

Subject
dcc not working






Hello!

I can't get dcc working. My email traffic is at about 3500 email/day so I
choose the list as a last mean seeking for help.

Can you help please, maybe I am blocked upstream somehow?

Greetings,
Robert


I can see outgoing traffic from my gateway but no answer packets:

tcpdump -i ppp0 port not 25 and port not 80 and port not 22 and port
not 53 and port not 37 and port not 123

14:24:48.753740 IP LB-F1.DTAG.DE > www.fixe-post.de: ICMP LB-
F1.DTAG.DE udp port domain unreachable, length 36
14:28:34.561453 IP Nausciaa.fixe-post.de.36172 > dcc.dmz.uncw.edu.
6277: UDP, length 40
14:28:34.561487 IP Nausciaa.fixe-post.de.36172 > samantha.wu-
wien.ac.at.6277: UDP, length 40
14:28:34.561671 IP Nausciaa.fixe-post.de.36172 > avas.cnc.bc.ca.6277:
UDP, length 40
14:28:34.561793 IP Nausciaa.fixe-post.de.36172 > mgw-cl-2.dmv.com.
6277: UDP, length 40
14:28:34.561920 IP Nausciaa.fixe-post.de.36172 > dcc-
ns-001.ironhillhardware.com.6277: UDP, length 40
14:28:34.562044 IP Nausciaa.fixe-post.de.36172 >
eth0.c.spam.sonic.net.6277: UDP, length 40
14:28:34.562169 IP Nausciaa.fixe-post.de.36172 > z.dcc-servers.net.
6277: UDP, length 40
14:28:34.562296 IP Nausciaa.fixe-post.de.36172 > dcc-
ns-000.ironhillhardware.com.6277: UDP, length 40
14:28:34.562547 IP Nausciaa.fixe-post.de.36172 > 194.228.41.13.6277:
UDP, length 40
14:28:34.562571 IP Nausciaa.fixe-post.de.36172 >
eth0.d.spam.sonic.net.6277: UDP, length 40
14:28:34.562796 IP Nausciaa.fixe-post.de.36172 > urts102.uni-trier.de.
6277: UDP, length 40
14:28:34.918985 IP Nausciaa.fixe-post.de.36172 > dcc.dmz.uncw.edu.
6277: UDP, length 40
14:28:34.919019 IP Nausciaa.fixe-post.de.36172 > samantha.wu-
wien.ac.at.6277: UDP, length 40
14:28:34.919039 IP Nausciaa.fixe-post.de.36172 > avas.cnc.bc.ca.6277:
UDP, length 40
14:28:34.919058 IP Nausciaa.fixe-post.de.36172 > mgw-cl-2.dmv.com.
6277: UDP, length 40
14:28:34.919077 IP Nausciaa.fixe-post.de.36172 > dcc-
ns-001.ironhillhardware.com.6277: UDP, length 40
14:28:34.919099 IP Nausciaa.fixe-post.de.36172 >
eth0.c.spam.sonic.net.6277: UDP, length 40
14:28:34.919121 IP Nausciaa.fixe-post.de.36172 > z.dcc-servers.net.
6277: UDP, length 40
14:28:34.919142 IP Nausciaa.fixe-post.de.36172 > dcc-
ns-000.ironhillhardware.com.6277: UDP, length 40
14:28:34.919161 IP Nausciaa.fixe-post.de.36172 > 194.228.41.13.6277:
UDP, length 40
14:28:34.919196 IP Nausciaa.fixe-post.de.36172 >
eth0.d.spam.sonic.net.6277: UDP, length 40
14:28:34.919297 IP Nausciaa.fixe-post.de.36172 > urts102.uni-trier.de.
6277: UDP, length 40
14:28:35.519030 IP Nausciaa.fixe-post.de.36172 > dcc.dmz.uncw.edu.
6277: UDP, length 40
14:28:35.519058 IP Nausciaa.fixe-post.de.36172 > samantha.wu-
wien.ac.at.6277: UDP, length 40
14:28:35.519079 IP Nausciaa.fixe-post.de.36172 > avas.cnc.bc.ca.6277:
UDP, length 40
14:28:35.519097 IP Nausciaa.fixe-post.de.36172 > mgw-cl-2.dmv.com.
6277: UDP, length 40
14:28:35.519116 IP Nausciaa.fixe-post.de.36172 > dcc-
ns-001.ironhillhardware.com.6277: UDP, length 40
14:28:35.519138 IP Nausciaa.fixe-post.de.36172 >
eth0.c.spam.sonic.net.6277: UDP, length 40
14:28:35.519156 IP Nausciaa.fixe-post.de.36172 > z.dcc-servers.net.
6277: UDP, length 40
14:28:35.519175 IP Nausciaa.fixe-post.de.36172 > dcc-
ns-000.ironhillhardware.com.6277: UDP, length 40
14:28:35.519218 IP Nausciaa.fixe-post.de.36172 > 194.228.41.13.6277:
UDP, length 40
14:28:35.519292 IP Nausciaa.fixe-post.de.36172 >
eth0.d.spam.sonic.net.6277: UDP, length 40
14:28:35.519310 IP Nausciaa.fixe-post.de.36172 > urts102.uni-trier.de.
6277: UDP, length 40
14:28:36.629060 IP Nausciaa.fixe-post.de.36172 > dcc.dmz.uncw.edu.
6277: UDP, length 40
14:28:36.629103 IP Nausciaa.fixe-post.de.36172 > samantha.wu-
wien.ac.at.6277: UDP, length 40
14:28:36.629135 IP Nausciaa.fixe-post.de.36172 > avas.cnc.bc.ca.6277:
UDP, length 40
14:28:36.629166 IP Nausciaa.fixe-post.de.36172 > mgw-cl-2.dmv.com.
6277: UDP, length 40
14:28:36.629214 IP Nausciaa.fixe-post.de.36172 > dcc-
ns-001.ironhillhardware.com.6277: UDP, length 40
14:28:36.629245 IP Nausciaa.fixe-post.de.36172 >
eth0.c.spam.sonic.net.6277: UDP, length 40
14:28:36.629291 IP Nausciaa.fixe-post.de.36172 > z.dcc-servers.net.
6277: UDP, length 40
14:28:36.629322 IP Nausciaa.fixe-post.de.36172 > dcc-
ns-000.ironhillhardware.com.6277: UDP, length 40
14:28:36.629354 IP Nausciaa.fixe-post.de.36172 > 194.228.41.13.6277:
UDP, length 40
14:28:36.629404 IP Nausciaa.fixe-post.de.36172 >
eth0.d.spam.sonic.net.6277: UDP, length 40
14:28:36.629433 IP Nausciaa.fixe-post.de.36172 > urts102.uni-trier.de.
6277: UDP, length 40

 >>
May 27 14:25:14 Nausciaa dccproc[4560]: continue not asking DCC 47
seconds after failure
May 27 14:28:38 Nausciaa dccproc[4569]: continue not asking DCC 2048
seconds after failure



and cdcc info sagt mir
Nausciaa log # cdcc info
# 05/27/07 14:18:08 CEST  /var/dcc/map
# Re-resolve names after 14:43:01
# 12 total, 0 working servers
# skipping asking DCC server 473 seconds more
# 499 dccproc balance since 14:18:04
IPv6 off

dcc1.dcc-servers.net,-      RTT+1000 ms  anon
#  137.208.8.26,-
#      not answering
#  142.27.70.214,-
#      not answering
#  152.20.253.5,-
#      not answering

dcc2.dcc-servers.net,-      RTT+1000 ms  anon
#  209.34.225.42,-
#      not answering
#  216.240.97.12,-
#      not answering

dcc3.dcc-servers.net,-      RTT+1000 ms  anon
#  64.124.52.232,-
#      not answering
#  208.201.249.233,-
#      not answering

dcc4.dcc-servers.net,-      RTT+1000 ms  anon
#  194.228.41.13,-
#      not answering
#  216.134.200.215,-
#      not answering

dcc5.dcc-servers.net,-      RTT+1000 ms  anon
#  136.199.199.102,-
#      not answering
#  208.201.249.232,-
#      not answering

127.0.0.1,-                 RTT-1000 ms  32768 394941540y648
#  127.0.0.1,-
#      not answering

################
# 05/27/07 14:18:08 CEST  GreyList /var/dcc/map
# Re-resolve names after 16:11:26
# 1 total, 0 working servers
# skipping asking Greylist server 43 seconds more

127.0.0.1,-                 Greylist 32768 394941540y648
#  127.0.0.1,6276
#      not answering






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