On Mon, 26 Jun 2006, Bernd Petrovitsch wrote:
On Sun, 2006-06-25 at 23:37 -0400, Stuart D. Gathman wrote:
[...]
A disadvantage of SPF is that correctly checking SPF requires knowing
all forwarders you have set up. This can be a problem for many
non-technical end-users, and for email providers with non-technical
users.
And it is a problem if $ISP doesn't provide means (or users do not use
it - for whatever reason) to send email through $ISP MTAs.
At the moment there are voices saying that "SPF breaks legal email" -
just because this works now.
<sarcasm>
Yeah, and open relays are perfectly legal rfc2821 email also. Why did
we have to go and break perfectly good email servers? What am I supposed
to do if my outgoing SMTP server is down for whatever reason? I used
to be able to just use any old MTA, and the mail would get delivered.
Now I am stuck waiting for my MTA to come back up, or else I have to
maintain multiple MTAs I am authorized to relay through - just in case
one goes down. What a waste of resources.
Even worse, when I set up my own open relay to use as a general purpose
backup MTA that I can use anywhere, no one will accept any mail from it!!
And it is prefectly legal according to the RFCs! That is truly broken
and unfair.
</sarcasm>
--
Stuart D. Gathman <stuart(_at_)bmsi(_dot_)com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.
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