DCC not answering

Bugs in eFa 4
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arned
Posts: 5
Joined: 10 Feb 2020 09:37

DCC not answering

Post by arned » 17 Feb 2020 10:59

Hello,

I have an error with DCC servers not answering.
I have installed eFa 4.0.2 on a fresh centOS 7 with 4 GB RAM.
Using the command "cdcc info" i get the following:

Code: Select all

# 02/17/20 11:42:08 CET  /var/dcc/map
# Re-resolve names after 12:46:21
# 12 total, 0 working servers
# continue not asking DCC server 32 seconds after 1 failures
IPv6 on   version=3

@,-                         RTT-1000 ms  32768
#  127.0.0.1,-
#      not answering

dcc.nova53.net,-            RTT+0 ms    anon
#  173.71.176.215,-
#      not answering

dcc1.dcc-servers.net,-      RTT+0 ms    anon
#  74.92.232.243,-
#      not answering
#  137.208.8.63,-
#      not answering

dcc2.dcc-servers.net,-      RTT+0 ms    anon
#  192.84.137.21,-
#      not answering
#  195.20.8.232,-
#      not answering

dcc3.dcc-servers.net,-      RTT+0 ms    anon
#  209.169.14.27,-
#      not answering
#  212.223.102.90,-
#      not answering

dcc4.dcc-servers.net,-      RTT+0 ms    anon
#  69.171.29.33,-
#      not answering
#  192.135.10.194,-
#      not answering

dcc5.dcc-servers.net,-      RTT+0 ms    anon
# *136.199.199.160,-
#      not answering
#  157.131.0.46,-
#      not answering

################
# 02/17/20 11:42:08 CET  greylist /var/dcc/map
# Re-resolve names after 13:42:08
# 1 total, 0 working servers
# continue not asking greylist server 32 seconds after 1 failures

@,-                         Greylist 32768
# *127.0.0.1,6276
#      not answering

When i enter the command "tail -f /var/log/maillog" I get this output:

Code: Select all

Feb 17 11:48:21 cas1 MailScanner[31902]: MailWatch: Starting up MailWatch SQL Blacklist
Feb 17 11:48:21 cas1 MailScanner[31902]: MailWatch: Read 0 blacklist entries
Feb 17 11:48:21 cas1 MailScanner[31902]: Config: calling custom init function MailWatchLogging
Feb 17 11:48:21 cas1 MailScanner[31902]: MailWatch: Started MailWatch SQL Logging child
Feb 17 11:48:21 cas1 MailScanner[31902]: Config: calling custom init function SQLWhitelist
Feb 17 11:48:21 cas1 MailScanner[31902]: MailWatch: Starting up MailWatch SQL Whitelist
Feb 17 11:48:21 cas1 MailScanner[31902]: MailWatch: Read 2 whitelist entries
Feb 17 11:48:21 cas1 MailScanner[31902]: Using SpamAssassin results cache
Feb 17 11:48:21 cas1 MailScanner[31902]: Connected to SpamAssassin cache database
Feb 17 11:48:21 cas1 MailScanner[31902]: Enabling SpamAssassin auto-whitelist functionality...
Feb 17 11:48:22 cas1 dccifd[2556]: no working DCC servers @ dcc.nova53.net dcc1.dcc-servers.net ... at 127.0.0.1 173.71.176.215 173.71.176.215 ...
Feb 17 11:48:22 cas1 dccifd[2556]: continue not asking DCC 32 seconds after 1 failures
Feb 17 11:48:26 cas1 MailScanner[31910]: MailScanner Email Processor version 5.2.2 starting...
Feb 17 11:48:26 cas1 MailScanner[31910]: Reading configuration file /etc/MailScanner/MailScanner.conf
Feb 17 11:48:26 cas1 MailScanner[31910]: Reading configuration file /etc/MailScanner/conf.d/README
Feb 17 11:48:26 cas1 MailScanner[31910]: Read 868 hostnames from the phishing whitelist
Feb 17 11:48:26 cas1 MailScanner[31910]: Read 5807 hostnames from the phishing blacklists
Feb 17 11:48:26 cas1 MailScanner[31910]: Config: calling custom init function SQLBlacklist
Feb 17 11:48:26 cas1 MailScanner[31910]: MailWatch: Starting up MailWatch SQL Blacklist
Feb 17 11:48:26 cas1 MailScanner[31910]: MailWatch: Read 0 blacklist entries
Feb 17 11:48:26 cas1 MailScanner[31910]: Config: calling custom init function MailWatchLogging
Feb 17 11:48:26 cas1 MailScanner[31910]: MailWatch: Started MailWatch SQL Logging child
Feb 17 11:48:26 cas1 MailScanner[31910]: Config: calling custom init function SQLWhitelist
Feb 17 11:48:26 cas1 MailScanner[31910]: MailWatch: Starting up MailWatch SQL Whitelist
Feb 17 11:48:26 cas1 MailScanner[31910]: MailWatch: Read 2 whitelist entries
Feb 17 11:48:26 cas1 MailScanner[31910]: Using SpamAssassin results cache
Feb 17 11:48:26 cas1 MailScanner[31910]: Connected to SpamAssassin cache database
Feb 17 11:48:26 cas1 MailScanner[31910]: Enabling SpamAssassin auto-whitelist functionality...
Feb 17 11:48:27 cas1 dccifd[2556]: continue not asking DCC 27 seconds after 1 failures

It just keeps on repeating and at a certain point stops retrying.
Does anyone have a solution with this problem?

Thanks in advance!

henk
Posts: 442
Joined: 14 Dec 2015 22:16
Location: Netherlands
Contact:

Re: DCC not answering

Post by henk » 17 Feb 2020 11:16

Did you read? viewtopic.php?t=3354

Can be a DNS / Firewall issue

arned
Posts: 5
Joined: 10 Feb 2020 09:37

Re: DCC not answering

Post by arned » 17 Feb 2020 13:54

Thank you for the quick reply.

Just to be sure i dissabled the firewall so it wouldn't block anything (with no success).
I also checked the dns configuration, i can ping 8.8.8.8 and www.google.com.
However, i can access mailscanner with the set ip-address(192.168.x.x), but can't use the localhost name (hostname.domain.com).
Could this be an issue with the dns configuration?

arned
Posts: 5
Joined: 10 Feb 2020 09:37

Re: DCC not answering

Post by arned » 20 Feb 2020 10:33

Update: We are 2 interns that are assigned to start up a eFa server in the most recent version so we have little to no experience. :D
After some searching we discovered that the eFa 3.0.0.8 server that is running right now has the same public IP as the eFa server that is deployed.
Could this possibly be the issue? This still doesn't explain why we can't reach the eFa mailscanner with my hostname (possible with IP)

Thanks in advance!

Kind regards, 2 students

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