Monthly Archive: July 2022

Uncategorized

Helpful CWP Hints

I host a number of sites using the Control Web Panel (CWP), an open source alternative to CPanel. Even though I have support on CWP, there are a bunch of little things that are either not documented or not well documented. This post is collecting up my notes on things that are not or not well documented. Backups CWP has a built-in capability to backup configuration and end user data. It backs it up to a local directory, which you can then configure to rsync out to a different server. It even has a convenient way to test your ssh...

July 29, 2022
Email

Helpful postfix Hints

On the servers I manage I use the postfix MTA (mail transfer agent). I occasionally find things about it that are not documented. I am adding this post to track those things so I can find them when need them. I hope some others can benefit from my notes. DKIM After setting up CWP (Control Web Panel) I found that users could not send email. It was being rejected due to a duplicate DKIM header. Literally the same, exact DKIM header appearing twice in the headers. CWP uses postfix with opendkim. Postfix was calling opendkim twice, both before and after...

July 28, 2022
July 2022
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