The hostname configuration in mxGuard is expecting lowercase.
- Please update your IMail or SmarterMail configuration so that the official hostname is lowercase.
- Restart the mxGuard service.
Example:
Change uppercase and mixed case strings like these:
- BIGMAILSERVER.CREATIVECLOUDSOLUTIONS.COM
- BigMailServer.creativecloudsolutions.com
to a lowercase string like this:
- bigmailserver.creativecloudsolutions.com