@aaPanel_Jose can you please add DKIM Record to add custom selector name
It is very important to give a custom name to the Email DKIM selector if you are using Aapanel as a webserver only, and keeping the email server on the hosting/domain provider.
Right now the mail server creates a DKIM selector record as: default._domainkey which is ok, if you are handling your email on aapanel, but I'm sure many users use aapanel as a web server only, and they use the php email on many scripts, unfortunately emails never arrives to gmail o it goes to spam in other email providers.
Same name DKIM selector is prohibited and it will conflict with most of the already: default._domainkey dns records created by cpanel, cpw, etc.
So I suggest you add an option to give a name other than "default" to DKIM when adding a new domain on the Mail Server option.
here I added some images


Thank you!