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Re: SMTP and ports 25 and 1025.



Hello *,

Am 2007-03-20 12:14:26, schrieb Matus UHLAR - fantomas:
> the submission - still more often, because outgoing SMTP connections from
> dynamic addresses (and often even static) are being blocked by ISPs in an
> attempt to stop spam spreading from them.

Since I am more or less mobile in a Motorcaravan, I have the need to go
to Internet Cafes to send my (postponed) messages.  Now, exactly since
7 weeks, the French ISP <http://www.free.fr/> is blocking port 25 and I
can not more send ANY messages to my own ISP <http://www.freenet.de/>.

"Free.fr" told me I should use there SMTP-Relay <smtp.free.fr> but
it does not work, since 90% of receivers of my messages rejecting
messages which come from SMTP-Relays which do not match the Domain-
Part of the sender.

My OWN courier server does this to and it 100% legitim.

> required authentication - i'd say the same.
> 
> Although it's of course possible to run unauthenticated submission for local
> networks on port 587, I'd say that's very bad idea. Using authentication
> gives benefits like better spam score to the senders, and easier
> configuration to admins.

Now I have configured my "ssmtp" on my Laptop to use port 587!!!

Not realy recommended because now, TLS/SSL does not more work and
the password is transfered in clear text.  On the other hand, it
pass the proxy of <free.fr> and I can send messages again.

Thanks, Greetings and nice Day
    Michelle Konzack
    Systemadministrator
    Tamay Dogan Network
    Debian GNU/Linux Consultant


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