Malformed e-mail address

When a user put a malformed address like:
to: "Zaheer Baig" <zaheerbaig@domain.com
Then he received massage that is
"The following receipient(s) cannot be reached:
'zaheerbaig@domain.com' on 9/14/2012 5:12PM
501 <'zaheerbaig@domain.com'>: malformed address: '> may not follow
<'zaheerbaig@domain.com


Solution:
That will cause a error on most MTAs as it is a non RFC compliant email address due to the missing right close bracket.
you should write correct your email address like,dont miss right close bracket
<'zaheerbaig@domain.com'>
not like this  <'zaheerbaig@domain.com