Package: dovecot-imapd Version: 1:2.3.4.1-1 Hello,
dovecot places numerical IP addresses in the pam rhost field. Easiest check that comes to me is the pam_warn module. Sample output looks like Mar 20 13:11:32 Redstar auth worker: PASSV: pam_warn(dovecot:account): function=[pam_sm_acct_mgmt] flags=0 service=[dovecot] terminal=[dovecot] user=[<redacted>] ruser=[<redacted>] rhost=[172.16.2.33] Other application, including opensshd, place the resolved hostname here. Further procesing with e.g. pam_access depends on the fqdn here. Bye, Joerg