Motorheadwilli, this would indicate that the text message was sent as an email rather than from a direct phone number. You can reference the similar Verizon forum here: http://spr.ly/66001jfIa
Does this provide clarity?
What is this number 6245
'6245' on a dial pad spells 'MAIL'. If someone sends you a text (from email) to 'your firstname.lastname@example.org or vzwpix.com it will show coming from that 6245 number.