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DoveCot: warning: SASL authentication failure: unable to canonify user and get auxprops

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#1 Sat, 06/23/2018 - 07:45

NDDT

DoveCot: warning: SASL authentication failure: unable to canonify user and get auxprops

Hi,

I have virtualmin on a Ubuntu 18.04 Server. I installed SSL-Certificates from Let's Encrypt and copied them to Dovecot and Postfix.

Sadly I get these error-messages:

postfix/smtps/smtpd[15736]: connect from p4FDAEFBE.dip0.t-ipconnect.de[79.218.239.190]
postfix/smtps/smtpd[15736]: warning: p4FDAEFBE.dip0.t-ipconnect.de[79.218.239.190]: SASL NTLM authentication failed: authentication failure
postfix/smtps/smtpd[15736]: warning: SASL authentication failure: unable to canonify user and get auxprops
postfix/smtps/smtpd[15736]: warning: p4FDAEFBE.dip0.t-ipconnect.de[79.218.239.190]: SASL DIGEST-MD5 authentication failed: authentication failure
postfix/smtps/smtpd[15736]: warning: p4FDAEFBE.dip0.t-ipconnect.de[79.218.239.190]: SASL LOGIN authentication failed: authentication failure
postfix/smtps/smtpd[15736]: lost connection after AUTH from p4FDAEFBE.dip0.t-ipconnect.de[79.218.239.190]
postfix/smtps/smtpd[15736]: disconnect from p4FDAEFBE.dip0.t-ipconnect.de[79.218.239.190] ehlo=1 auth=0/3 commands=1/4

When trying to connect via Outlook. I will be asked to verify the SSL-Certificate (which is odd as it should be signed) and I'm asked for the password and username over and over again.

If I check the user it says:

IMAP (fetching email) 06/23/2018 2:50 PM (basically now)

so it seams like I can lock in via IMAP

How can I debug this. Does anybody know this problem?

#2 Sat, 06/23/2018 - 08:47

NDDT

I added the File "/etc/postfix/sasl/smtpd.conf" manually and restarted postfix saslauthd (with ssh):

/etc/init.d/postfix restart
/etc/init.d/saslauthd restart

Now I have this error:

postfix/smtps/smtpd[19507]: connect from p4FDAEFBE.dip0.t-ipconnect.de[79.218.239.190]
postfix/smtps/smtpd[19507]: warning: SASL authentication failure: cannot connect to saslauthd server: No such file or directory
postfix/smtps/smtpd[19507]: warning: p4FDAEFBE.dip0.t-ipconnect.de[79.218.239.190]: SASL LOGIN authentication failed: generic failure
postfix/smtps/smtpd[19507]: lost connection after AUTH from p4FDAEFBE.dip0.t-ipconnect.de[79.218.239.190]
postfix/smtps/smtpd[19507]: disconnect from p4FDAEFBE.dip0.t-ipconnect.de[79.218.239.190] ehlo=1 auth=0/1 commands=1/2

#3 Sat, 06/23/2018 - 10:33

NDDT

problem solved: see this article https://www.virtualmin.com/node/57511#comment-797626

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