Hello,

I think the server does not offer TLS authentication to you at all (only PLAIN and LOGIN authentication which you could probably use, if you have valid credentials).

You should really contact the administrator of the server and clarify things up - how are you supposed to authenticate (TLS, PLAIN, LOGIN, ... ?), tell him your IP is not offered TLS (maybe he just forgot to include your IP into some table?) if he insinsts on TLS, and so on. The problem could be very well on his side.

Sorry if I misunderstood your problem, it's quite possible because your mail does not provide much detail about your specific scenario.

Best Regards
Daniel Ryslink

On Wed, 17 Mar 2010, Patric Falinder wrote:

Thats just it, I'm not even sure if I have configured it right and I'm starting 
to think there is something wrong with it cause I'm not 100% sure how
sasl works..
I attached my main.cf to this mail. I have read the Postfix SASL Readme but I'm 
still not sure about how it works or if my config is right..


Varun Kaushik skrev 2010-03-17 10:58:
      Do you have any authentication configured?
      As you mentioned SASL setup , are all the configurations sane?

      On Wed, Mar 17, 2010 at 3:20 PM, Patric Falinder <patric.falin...@omg.nu> 
wrote:
            Hi!

            I act as a "spamcheck"-relay for a couple of servers but I get this 
error message for one server when I'm trying to relay a
            message to it:

            Mar 17 10:28:07 myrelay postfix/smtp[4910]: 1358410A329: 
to=<j...@domain.se>, relay=mail.domain.se[81.228.XXX.XXX]:25, delay=0.4,
            delays=0.08/0.01/0.27/0.05, dsn=5.7.1, status=bounced (host 
mail.domain.se[81.228.XXX.XXX] said: 550 5.7.1 <j...@domain.se>...
            Relaying denied. Proper authentication required. (in reply to RCPT 
TO command))

            And I get this on the server I'm trying to send to (it runs 
Sendmail):

            Mar 17 10:28:22 gateway sendmail[26927]: o2H9SMYZ026927: 
ruleset=check_rcpt, arg1=<j...@domain.se>,
            relay=smtp3.myrelay.com[194.218.XXX.XXX], reject=550 5.7.1 
<j...@domain.se>... Relaying denied. Proper authentication required.

            If I try telnet to the mailserver from my relay-server I get this:

            myrelay:~/# telnet mail.domain.se 25
            Trying 81.228.XXX.XXX...
            Connected to mail.domain.se.
            Escape character is '^]'.
            220 domain.se ESMTP Wed, 17 Mar 2010 10:40:35 +0100
            ehlo domain.se
            250-domain.se Hello smtp3.myrelay.com[194.218.XX.XX], pleased to 
meet you
            250-ENHANCEDSTATUSCODES
            250-PIPELINING
            250-8BITMIME
            250-SIZE
            250-DSN
            250-AUTH PLAIN LOGIN
            250-DELIVERBY
            250 HELP

            I am updating my servers and "myrelay" is the new one, the old one 
runs Sendmail and can relay just fine to it without any
            "Relaying denied. Proper authentication required."
            I have no idea what the problem is here and was hoping you could 
help me? Can it be something with my sasl-setup on my new
            server? But mail.domain.se doesn't show STARTTLS when I telnet to 
it..


            Thanks for any help!





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