s�n, 07.11.2004 kl. 14.39 skrev JP:
[...]
> > I'll tell you once more, and this is the last time ;) DO use Postfix to
> > relay outgoing mail to optonline. DO use a relay transport that does not
> > call th SpamAssassin content filter on ougoing mail. DO relay unfiltered
> > outgoing mail to optonline.
> >
> > [...]

> but that was the set-up I started with,
> SqMail->Postfix->mail.optonline.net (no filter for outgoing mail)  with
> the same result that I see now, it was suggested, and makes sense, that I
> take postfix out of the equation so that Postfix headers (which would list
> my IP) would not be in my outgoing mail.
> 
> The current set-up is SqMail->SMTP mail.optonline.net   Which is how every
> other MUA sends mail. Why, then does only the mail coming from SqMail get
> tagged as spam by (I used Spamassassin in my example but) the big
> providers AOL, Hotmail, Yahoo.......
> 
> What sounds like a resonable explanation to this was offered in my initial
> post.

O.k. Though I now don't understand this any more.  I run my own Postfix
mail server for a largish outfit (high school) in Amsterdam. I've built
it so that any pupil, teacher, whoever I authorize who SASL
authenticates may relay through my server. I could do this on an IP or
cidr-range base, but I've chosen SASL auth, since that's less hassle and
I have greater control. It doesn't matter if he/she has a residential
dynamically-assigned IP or not. Mail to Hotmail, Yahoo, MSN, Outblaze,
wherever, gets accepted by them, since my server is the last hop. I also
do my own RBL, cidr and greylisting checks on incoming mail and all that
counts is the IP of the connecting client. I don't go zooming through
the Received from: headers to see if there's a dynamic IP, a private
class IP or anything else to refuse on, it's purely the
connecting/client IP that counts.

The normal way for ISPs issuing dynamically assigned IP numbers to
facilitate smtp mail is to have the client relay through their MTAs. In
your case, that's Optonline, which should be "clean". There must be
something else going on here, as others have pointed out. Maybe
Optonline's considered as "tainted" by the Hotmail etc. crowd?

--Tonni

-- 
�Livet er ein gamp�, sa �yken.
I can confirm this.
 
mail: [EMAIL PROTECTED]
http://www.billy.demon.nl
 
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