Hi @gcodell
the mail - subdomain doesn't have an A- or AAAA record ( https://check-your-website.server-daten.de/?q=mail.play-pen.net ):
| Host | T | IP-Address | is auth. | ∑ Queries | ∑ Timeout |
|---|---|---|---|---|---|
| mail.play-pen.net | Name Error | yes | 1 | 0 | |
| www.mail.play-pen.net | Name Error | yes | 1 | 0 |
If you want to use http validation, you need an A record
Your Domain name -> your ip address.
If you run the client on your play-pen.net domain, create an A record with the same ip address.
PS: Your main domain
| Host | T | IP-Address | is auth. | ∑ Queries | ∑ Timeout |
|---|---|---|---|---|---|
| play-pen.net | A | 173.197.225.50 Enterprise/Alabama/United States (US) - Spectrum Hostname: rrcs-173-197-225-50.west.biz.rr.com | yes | 1 | 0 |
| AAAA | yes |
has a correct configuration. So create such an entry with your mail subdomain.