Two friends have gotten an error message from the postmaster that an email was undeliverable and then some reference to "unbalanced". Anyone ever have a similar error message and if so, what do you do?
Two friends have gotten an error message from the postmaster that an email was undeliverable and then some reference to "unbalanced". Anyone ever have a similar error message and if so, what do you do?

This month, every Windows Secrets subscriber can download a one-chapter excerpt of Windows 7: The Missing Manual.Windows 7: The Missing Manual provides valuable information to help you overcome these difficulties in learning a new operating system. Subscribe today to download your free excerpt.
The only reference to 'unbalanced' I came across was here:
<A target="_blank" HREF=http://support.microsoft.com/support/kb/articles/Q190/7/08.ASP>Q190708</A> XFOR: Internet Mail Service Is Not Copying Administrator on NDRs
which mentions:
Examples of NDRs that do make it to the Administrator mailbox include the following:
Unbalanced open & closed brackets
Is it possible they have copied an address (or are replying to post) with a missing bracket? e.g.:
John Smith [john.smith@company.com