cyberwatcher
Your SystemName appears to be mail.
Just to be sure what is output of
config show SystemName
no I didnt recreate any templates or remove any. I did this as a new install on another server.
Yes but you said you did a restore of the sme7 backup to a fresh install of sme9, so any custom templates that were on sme7 will now be on sme9.
You should delete those after the restore, or recreate/check to see if the custom templates match the template code being used natively in sme9.
You can log in to the console (as admin) & run through the Configure this server screens & simply rename the server to something less "conflicting"
eg mymachine1 or whatever, anything other than mail, as that name conflicts (in a naming sense) with automatically created URL names.
You do not need your server to have a domain name of mail.yourdomain.com nor do you need external DNS to be configured for that, the sme server will respond to mail sent to yourdomain.com
I do not think it is causing serious issues, other than confusing those trying to help you.