Comment 3 for bug 1657897

@James, big thanks for the information I think your clarity about the logging of the rhost and the redhat bug helped a bit.

To help get work completed on this bug I tried to reproduce this by setting up a mail server using sasl using these steps [1]. I was then able to telnet to it from a remote host and attempt to login. In mail.log I got the following messages:

Jan 25 16:55:58 uvt-yakkety postfix/smtpd[3313]: connect from unknown[192.168.122.1]
Jan 25 16:56:13 uvt-yakkety postfix/smtpd[3313]: warning: unknown[192.168.122.1]: SASL login authentication failed: authentication failure

which show the remote host IP, however in auth.log I see:

Jan 25 16:56:12 uvt-yakkety saslauthd[3020]: pam_unix(smtp:auth): authentication failure; logname= uid=0 euid=0 tty= ruser= rhost= user=powersj
Jan 25 16:56:13 uvt-yakkety saslauthd[3020]: DEBUG: auth_pam: pam_authenticate failed: Authentication failure
Jan 25 16:56:13 uvt-yakkety saslauthd[3020]: do_auth : auth failure: [user=powersj] [service=smtp] [realm=uvt-yakkety] [mech=pam] [reason=PAM auth error]

I believe this replicated the issue, can you confirm?

[1] https://wiki.debian.org/PostfixAndSASL