Good day Ygor,
Thank you for the information. I'm not clear if there was any recent issues with the server being interrupted or abruptly restarted due to an update or system failure. We have observed in some situations that the userconfig.xml and possibly the domainlist.xml files become corrupt or malformed with incorrect data.
Please let us know if you had any difficulties with the server or if you interrupted the SmarterMail service and then rebooted the server as a consequence.
Thank You.