The following recipient(s) could not be reached:
‘watt1@hanafos.com’ on 22/02/2010 11:32 AM
501 5.1.3 Bad recipient address syntax
If you look closely, the open and close quote are mistakenly included as part of the email address. This problem usually happen to Outlook when someone reply an HTML email.
Remove the quote or enter the email address manually can solve the problem.