On Tue, 12 Feb 2008, Jeff Gaines wrote:-
>If I tell my email program (Barca 2) to connect to one of my own mail
>servers (but over my Demon connection) to send email how much of
>Demon's service am I using?
That depends. Does your mail server send direct or does it relay through
Demons servers?
If it goes directly, it will use the wires and pass through Demons
routers but it won't go through their servers, and no trace of any of
Demons servers will appear in the mail headers.
If it goes through Demons servers, there will be Received: headers in
the mail showing which servers it passed through. E.g. post.demon.co.uk,
followed by whichever one actually does the delivery.
As an example, mail I send goes from my client, Turnpike, to my mail
server, Sendmail. Sendmail will then look up where it's supposed to send
the mail to and pass it on to the correct mail server. The only header
containing a Demon address is the one generated by the receiving server
saying that it received the mail from my server.
The only exceptions to this is for AOL. A few (several?) years ago, AOL
started accepting mail sent from IP addresses that were either an ISP or
business mail server, or were on their whitelist. While my IP address
was added to their whitelist, I had added an entry to my mailers list so
any mail sent to AOL would go via Demons servers. Since then, the only
person I was in contact with that had an AOL address has moved on, and I
no longer need the forwarding rule, it's left there just in case.
>I have been told that I will still be connected to Port 25 at Demon so
>any Sky-like (or AOL or BT like) restrictions they imposed would still
>apply.
Only if your mail server is configured to forward mail to Demons
servers.
Regards,
David Bolt
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