[AccessD] Email Automation to Outlook problem

I have several Access 2003 apps that use automation to send email through
Outlook (on Exchange server).

Recently at a client site the Outlook-Exchange server quit sending the
email.

It is rejecting the email address because it has apostrophes around it,
e.g.,

	'johndoe at aol.com'

Until last week it sent the email with apostrophes around it without any
hesitation.

Does anyone have any insight into what could have caused the problem and/or
solutions?

TIA,

Myke