2. The method of claim 1 wherein the determining further comprises: receiving addressee information about an addressee to whom a message is intended at the e-mail address; and determining whether the addressee information is consistent with the identifier portion and the identified format requirement, wherein the addressee information provides information in addition to the email address.
2. The method of claim 1 wherein the determining further comprises: receiving addressee information about an addressee to whom a message is intended at the e-mail address; and determining whether the addressee information is consistent with the identifier portion and the identified format requirement, wherein the addressee information provides information in addition to the email address. 3. The method of claim 2 wherein the addressee information is a name of the addressee.