port question

[Tony Alfrey]

David A. Bandel wrote:

> 
> I can't make this much clearer.

Yes, thanks, it is very clear! I'm just wondering about the actual 
packet of bits that is assembled at each layer.  My understanding is 
that the port ID is part of the bit stream that makes up the packet.  If 
this packet starts out from ME where I (my mail client) put in an ID of 
port 587 into the header that precedes the data bits, does an additional 
piece of header get added (perhaps at the sending SMTP server end) with 
an ID of port 25 so that it makes it to the receiving SMTP server?



-- 
Tony Alfrey
tonyalfrey at earthlink.net
"I'd Rather Be Sailing"