Exchange Server Error Log

[Danks]

IÂ’m doing an Exchange Server System Monitor. In the Event Viewer under Applications, IÂ’m running into this error log.

-Logon attempt by domain\userX from xxx.xxx.xxx.xxx to userX has failed: EcGetMailboxDN() call failed with error There is no such mailbox on this server.

ItÂ’s a reoccurring error posting every minute that I cant seem to troubleshoot... :-(

Can someone please help me?

 

[brrymnvette]

Is it a user on the network? Looks like someone's trying to get in. I'd get into your firewall and block that IP if you don't know who it is.

 

[Danks]

Actually, its a valid user that seems to have no problems with e-mails.