Hello to all,
I just realized that the keytab file generated by my AD samba4 server contains only the arcfour-hmac encryption. Do you think the problem could come from there?
klist -Kek /etc/krb5.keytab Keytab name: FILE:/etc/krb5.keytab KVNO Principal ---- -------------------------------------------------------------------------- 2 host/smtptest.domain.fr@xxxxxxx (DEPRECATED:arcfour-hmac) (0x6c72cd7e9a4249b6fa67ca6c4624676e) 2 smtp/smtptest.domain.fr@xxxxxxx (DEPRECATED:arcfour-hmac) (0x6c72cd7e9a4249b6fa67ca6c4624676e) 2 smtpd/smtptest.domain.fr@xxxxxxx (DEPRECATED:arcfour-hmac) (0x6c72cd7e9a4249b6fa67ca6c4624676e)
At the same time, on another server I just tested GSSAPI with an imap service and dovecot and it works just with this encryption.