Do all server headers from POP email accounts show this information?

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I recently sent an email from inside of Outlook Microsoft Office 2007 and w
as surprised, when the email was bounced by the server of the recipient, of
 the detailed information in the header, such as the IP address (which I ex
pected) and the name of my computer (which I did not expect).  Do all POP c
lients provide such detailed information, or just the Outlook email program
?  I think the answer is yes, all do.


Re: Do all server headers from POP email accounts show this information?

RayLopez99 wrote:
Quoted text here. Click to load it

Outlook (the e-mail client program) uses the Computer Name as the
argument of the HELO transaction with the outgoing SMTP server.  Outlook
2000, for example, does this.  You would see this on the last received
line (the last received line printed to the message header if you read
from top to bottom).
On win-98, you can change the Computer Name by editing the properties of
Network Neighborhood (identification tab).  This is where you also find
the entry for the Workgroup the computer belongs to.

Any change you make to Computer Name seems to propagate automatically
HKEY_CURRENT_USER\Software\Microsoft\Office.0\Outlook\Machine Name
HKEY_USERS\.DEFAULT\Software\Microsoft\Office.0\Outlook\Machine Name

I'm guessing that if you change the outlook registry keys "Machine Name"
values, then your email headers will use the new value and you won't be
changing your Machine-Name as configured by or in your network settings.

Not all email clients will use Machine_Name as the HELO greeting.  
Netscape Communicator 4.x (what I'm using now to post this) uses the
domain part of my email address (guy. com) as the HELO greeting.

Mozilla Thunderbird uses the computer's LAN IP address as the HELO

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