Hi John. I'll get this over to the developers to be fixed.
In the meantime, you can manually delete this domain using these steps:
- Stop the SmarterMail service.
- Edit C:\Program files (x86)\SmarterTools\SmarterMail\Service\domainList.xml.
- Find and remove the <domain> entry containing the & symbol. Save and close.
- Delete the C:\SmarterMail\Domains\[DOMAIN] containing the & symbol.
- Restart the SmarterMail service.