On 17/10/2004, at 2:51 PM, Julien V. wrote:
Hi everybody,
I heard about courier and wanted to change to this suite which looks like
cool.
But I have a BIG problem with ESMTP mechanism for authentification.
I need to host a few domain for which user can post message from any IP to any
email, with an authentification (i must be sure that's my users who post, and
not spamers : don't want to be open relay) BUT i want too other SMTP relays
can delivers mails to my users, so for them, ESMTP do not ask
authentification.
Before I had a patched of my own qmail which do this :
Someone connect to ESMTP. He send "HELO mynameis" command. After, he tell who is he with "MAIL FROM:<isemail>" command and then, for who the mail is for with "RCPT TO:<email>" command.
Ok, now two choice :
- If "email" owned by a hosted domain, ESMTP answer "ok", or "user does not
exists", if it is case.
- Else, it ask authentification.
(That's the way it may function.)
With ESMTP authentification, impossible to do that is this way.
If a ask Authentification, ESMTP ask it just after the EHLO/HELO command.
How Internet relay can delivers mails in these conditions ????
Anyone has the solution ?
I hope courier's users do not permit OPEN RELAY !! With spams around there,
that's a crime, so i could imagine that's some of you allow to receive
internet mails in a closed relay :-p
(See below for the log)
Thanks for help ! Julien
--- Configuration : ESTMP Authentification enabled 127.0.0.1<tab>allow,RELAYCLIENT in smtpaccess
on this computer, telnet 127.0.0.1 25 give : blanchette:/etc/courier/smtpaccess# telnet 127.0.0.1 25 Trying 127.0.0.1... Connected to 127.0.0.1. Escape character is '^]'. 220 blanchette.skouat.net ESMTP EHLO thatsme 250-blanchette.skouat.net Ok. 250-AUTH LOGIN CRAM-MD5 250-AUTH=LOGIN CRAM-MD5 X-NETSCAPE-HAS-BUGS 250-STARTTLS 250-XVERP=Courier 250-XEXDATA 250-XSECURITY=NONE,STARTTLS 250-PIPELINING 250-8BITMIME 250-SIZE 250 DSN MAIL FROM:<[EMAIL PROTECTED]> 535 Authentication required.
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