Hi,

I use dovecot-2.3.15 with MySQL backend for authentication.

I just converted cleartext credentials in SSHA512. Authentication (POP3/IMAP/Roundcube webmail) is working fine.

I got a few users complianing about login issues with Thunderbird.

Logs show this:

Dec 1 16:34:52 mailserver dovecot[72554] auth-worker(72559): conn unix:auth-worker (uid=143): auth-worker<5294>: sql(user@domain.net,xx.yy.ww.zz,<g+jCZhfS/N1dKskw>): Requested CRAM-MD5 scheme, but we have only CRYPT

I don't understand this error. It seems I still support CRAM-MD5:

telnet localhost 143
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
* OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ STARTTLS AUTH=PLAIN AUTH=LOGIN AUTH=DIGEST-MD5 AUTH=CRAM-MD5] Dovecot ready.

This is my conf:

doveconf -n
# 2.3.15 (0503334ab1): /usr/local/etc/dovecot/dovecot.conf
# OS: FreeBSD 13.0-RELEASE-p4 amd64 zfs
# Hostname: server.domain.net
doveconf: Warning: please set ssl_dh=</usr/local/etc/dovecot/dh.pem
doveconf: Warning: You can generate it with: dd if=/var/db/dovecot/ssl-parameters.dat bs=1 skip=88 | openssl dhparam -inform der > /usr/local/etc/dovecot/dh.pem
auth_debug = yes
auth_mechanisms = plain login digest-md5 cram-md5
auth_verbose = yes
default_client_limit = 2000
default_process_limit = 500
default_vsz_limit = 512 M
disable_plaintext_auth = no
first_valid_gid = 125
first_valid_uid = 125
imap_id_log = *
mail_gid = 1003
mail_location = maildir:/mail/domains
mail_privileged_group = postfix
mail_uid = 1003
namespace inbox {
inbox = yes
location =
mailbox Drafts {
special_use = \Drafts
}
mailbox Junk {
special_use = \Junk
}
mailbox Sent {
special_use = \Sent
}
mailbox "Sent Messages" {
special_use = \Sent
}
mailbox Trash {
special_use = \Trash
}
prefix =
}
passdb {
args = /usr/local/etc/dovecot/dovecot-sql-crypt.conf.ext
driver = sql
}
service auth {
unix_listener /var/spool/postfix/private/auth {
group = postfix
mode = 0666
user = postfix
}
unix_listener auth-userdb {
group = postfix
mode = 0600
user = postfix
}
}
service imap {
process_limit = 1024
}
service lmtp {
unix_listener /var/spool/postfix/private/dovecot-lmtp {
group = postfix
mode = 0600
user = postfix
}
}
ssl_cert = </etc/ssl/wildcard.domain.net_bundle.crt
ssl_dh = # hidden, use -P to show it
ssl_key = # hidden, use -P to show it
userdb {
args = /usr/local/etc/dovecot/dovecot-sql-crypt.conf.ext
driver = sql
}
protocol imap {
mail_max_userip_connections = 100
}

this is my dovecot-sql-crypt.conf.ext:

# cat /usr/local/etc/dovecot/dovecot-sql-crypt.conf.ext
driver=mysql
default_pass_scheme=CRYPT
connect= host=db.domain.net port=3306 dbname=mail user=user password=xxxxxxxxxxxxxxxxxxxx
#password_query = SELECT case when crypt is not null then crypt else password end as password FROM `mailbox` WHERE username='%u' AND suspended='N'

password_query = SELECT case when crypt is not null then crypt else password_crypt end as password FROM `mailbox` WHERE username='%u' AND suspended='N'

user_query = SELECT concat('maildir:',home) as mail, 125 AS uid, 125 AS gid FROM mailbox WHERE username='%u' AND suspended='N'

Thank you