Lorenzo Pistone writes:

Hello,
I cannot login with imap. I have followed the guide about debugging
login problems, and I get this weird log lines:

     authdaemond: authuserdb: clearpasswd=<null>,
passwd=96bfdf86b8b8ea1a1d5e2087f12b35bee813e3c32518ea0c89b55e52436720bc125274058ac59cac
     authdaemond: supplied password 'xxx' does not match encrypted
password
'96bfdf86b8b8ea1a1d5e2087f12b35bee813e3c32518ea0c89b55e52436720bc125274058ac59cac'

which is kind of laughable, because you can see that the hashes match.
Is it a bug or some other strange quirk? The hash has been created with
'userdbpw -hmac-sha1'.

Precomputed CRAM-SHA1 hashes should be stored in the hmac-sha1pw field, not the 'passwd' field.

Note, that they can be used with CRAM-SHA1 authentication method only. Clients that do not support CRAM-SHA1 will not be able to log in. This is typically used when, by policy, only CRAM-SHA1 authentication method can be used to log in, and the precomputed SHA1 hash avoids the need to retain cleartext passwords on the server.

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