[exim] Can I force authentication?

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Author: Matthew Roberts
Date:  
To: exim-users
Subject: [exim] Can I force authentication?
Hello,

I'm using Exim4 to pass mail from Mutt to the campus mail server.

The mail server requires authentication for off-campus email addresses, but not for on-campus addresses. In order to make this work I have added the mail server to the /etc/exim4/passwd.client with login/password information.

This worked great until a few days ago, when the off-campus mail from my system stopped going through. I hadn't changed anything.

To test it out I tried to send a test message off-campus. See below for results.

It appears that the mail server is not asking for authentication. If that is the case, is there a way for me to force authentication even if the mail server does not request it?

Thanks,

Matt

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Results of test message:
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# /usr/sbin/exim4 -v -i mike0405@???
Subject: Hello

This is a test.
<Ctrl-D>
LOG: MAIN
<= matt@??? U=matt P=local S=334
15:52 matt@debian 2[/var/spool/exim4/input] delivering 1Q2rW9-0001Id-Es
R: smarthost for mike0405@???
T: remote_smtp_smarthost for mike0405@???
Connecting to smtp.nw.uwplatt.edu [137.104.128.96]:25 ... connected
SMTP<< 220 ironman.uwplatt.edu ESMTP
SMTP>> EHLO localhost.localdomain

SMTP<< 250-ironman.uwplatt.edu
       250-8BITMIME
       250 SIZE 52428800

SMTP>> MAIL FROM:<matt@???> SIZE=1367

SMTP<< 250 sender <matt@???> ok
SMTP>> RCPT TO:<mike0405@???>

SMTP<< 550 #5.1.0 Address rejected.
SMTP>> QUIT

LOG: MAIN
** mike0405@??? R=smarthost T=remote_smtp_smarthost: SMTP error from remote mail server after RCPT TO:<mike0405@???>: host smtp.nw.uwplatt.edu [137.104.128.96]: 550 #5.1.0 Address rejected.