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Ok, so I've had a domain for almost 20 years and my ClearOS 7 server is starting to see spam bounce emails appear and they're getting annoying. I've installed Attack Detector, and have the Spam Filter enabled with SMTP authentication, System Audit, etc etc. (formerly associated with has given me a free SMTP outbound relay host with which is nice however is now a grandfathered service (they're owned by Oracle now). I'm basically unable to add a DKIM record to my domain. The option to add this simply doesn't exist on and their support team has said "Oracle no longer support those domains so you're on your own, or move to the new service (at a zillion dollars a year)".

So what are some of the issues I'm about to encounter migrating the COS7 Home server to a new domain purchased thru ClearOS? The server is running SMTP, OwnCloud, OpenVPN, user certificates in Gateway mode.

Is this going to be relatively simple to change the server settings? The ClearOS server is a registered system so have a valid "" name in my account.
Monday, December 07 2020, 11:44 AM
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Accepted Answer

Monday, December 07 2020, 06:42 PM - #Permalink
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You have got lots of things here! If you can, I'd avoid changing the LAN domain as I've seen it end in tears and I am not sure why. If it does end in tears, do a configuration restore.

You need to find somewhere to host your domain. There are plenty of domain providers, including Clearcenter. You'll need one to set up all your DNS records except your PTR record. Moving your domain to another domain host should have no effect on ClearOS.

Do you have an Dynamic IP and what do you want to do with your FQDN? The Clearcenter DDNS can either update your subdomain or your domain, if they host it, but not both. If you ask them nicely, they may convert your subdomain to a CNAME record pointing to your domain.

If you have a static IP without control over your PTR record (your ISP controls this) or a dynamic IP, you will need to relay your e-mails out via either your ISP (if they permit it) or via an SMTP service such as your account, or many e-mail servers or ISPs will either reject or SPAM your e-mails.
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    Wednesday, December 09 2020, 08:44 AM - #Permalink
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    Nick, thanks for your time in replying to the rather long-winded 'water cooler' question. I'll not be altering the local domain details, just the mail server once the new domain is registered.

    It's damn annoying that any domain provider doesn't provide basic security for domain-based email. Got to admit, I originally signed up with many moons ago because they would provide a free domain name, then after a couple of years in crept the pricing model... I'm going to register a new domain on ClearCenter now and secure the MX stuff properly. No more spam for (and from) me! ;)
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