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How to test ClamAV’s functionality

How to test ClamAV’s functionality

by benny | Nov 4, 2014 | command-line, continuous-learning, Posted, Server Security

From time to time, ClamAV may appear to not be flagging spam correctly. One step in your troubleshooting process should be to make sure that ClamAV is working as intended. The easiest and quickest way to do this would be with an eicar file. Let’s run though how...
cPanel’s Manually Updated Hostname Alert

cPanel’s Manually Updated Hostname Alert

by benny | Oct 25, 2014 | command-line, cPanel, Featured Posts, server administration, whm

If you have recently updated your cPanel servers to 11.46, you may have received something that looks like the following alert. WHM has detected a manual hostname change. To fix this problem, we recommend that you perform the following action: Update your hostname in...
MailScanner error after upgrading to cPanel 11.46

MailScanner error after upgrading to cPanel 11.46

by benny | Oct 24, 2014 | command-line, cPanel, Server Security, whm

If your cPanel server’s mail has stopped working correctly after upgrading to 11.46, and your server is running ConfigServer’s MailScanner software, check the server’s /var/log/maillog to see if this error is being logged: Oct 24 01:21:34...
DKIM key retrieval failed error in exim maillog.

DKIM key retrieval failed error in exim maillog.

by benny | Oct 23, 2014 | command-line, cPanel, exim

Recently I ran into an email delivery problem, and the only error I could find was in the exim_mainlog and read “DKIM key retrieval failed”. This problem caused mail delivery to fail to all of the major email services (gmail, yahoo, hotmail) and many of...

How to Disable SSLv3 on a cPanel server

by benny | Oct 15, 2014 | command-line, cPanel, Server Security, SSL

SSLv3 is a 15 year old protocol that isn’t used by many anymore, but is still functionally allowed by many webservers. If you don’t run a webserver, but have a website, it’s up to you to apply pressure to your webhost to make sure that SSLv3 is...
spam filtering failing with error “**** debug string too long – truncated ****”

spam filtering failing with error “**** debug string too long – truncated ****”

by benny | Sep 3, 2014 | command-line, exim, Posted, whm

SpamAssassin is a very good spam filtering service rolled into cPanel and WHM’s email services. It’s very configurable, both as a user and as an Administrator, and is highly effective at blocking spam. However, when you attempt to filter larger messages...
cPanel’s Manually Updated Hostname Alert

How to backup your cPanel accounts to Dropbox

by benny | Aug 31, 2014 | backups, command-line, continuous-learning, cPanel, whm, why though

Dropbox is a fantastic tool for syncing data across multiple physical and virtual locations. You can even set up your WHM server to sync all of your backups to your Dropbox account.  Prerequisites: 1) A Dropbox account. 2) Root access to a WHM server. Step one: Create...
cPanel’s Manually Updated Hostname Alert

Upgrades past 11.30 are blocked by Exim version.

by benny | Aug 28, 2014 | command-line, continuous-learning, cPanel, whm

Sometimes when upgrading older versions of cPanel, you may encounter one of cPanel’s upgrade blockers in a way that isn’t anticipated. Last week, I encountered that exact situation in attempting to upgrade a server that was running 11.30, and was ready to...
RoundCube “service currently not available error 800”

RoundCube “service currently not available error 800”

by benny | Jun 4, 2014 | command-line, cPanel, Logging in to Webmail, server administration, whm

I’m seeing an upswing in the number of times I’m seeing this error, so I figured I’d pass it on. If your users, when trying to log in to RoundCube, are seeing a “service currently not available error 800”, and your mail server is running,...
cPanel’s Manually Updated Hostname Alert

Webmail logging out, and not allowing back in.

by benny | May 30, 2014 | Account Management, command-line, cPanel, Posted, server administration, whm

One of the most common problems I’m seeing lately is specific to cPanel servers, wherein a user accesses webmail on a server that wouldn’t be considered busy or loaded. Shortly after login Webmail then logs them out. Every time, it’s related to LFD...
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