Can't send any any emails to specific email addresses RRS feed

  • Question

  • Hi everybody,

    i am haing a problem in my exchange server,
    basically i cant send any email to a specific email accounts,

    Your message did not reach some or all of the intended recipients.

    bellow are the details view of

    Subject:    test

          Sent: 14/01/2010 09:11


    The following recipient(s) cannot be reached:


 on 14/01/2010 09:11

                There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.

                < #5.5.0 smtp;550 account locked. Please contact your technical support.>

    all this happend suddenly by yesterday, and yesterday,
    any idea to sort out this problem ?

    Thursday, January 14, 2010 10:17 AM