On Tue, Oct 24, 2023 at 12:52:37PM +0200, Paul Menzel via Postfix-users wrote:
> Jozsef Kadlecsik submitted a patch, and it was accepted and is going to be
> available in the 3.9 release [1].
>
> > 20231006
> >
> > Cleanup: attempt to log the SASL username after authentication
> > failure. This appends ", sasl_username=xxx" to SASL authentication
> > failure logging. Based on code by Jozsef Kadlecsik. Files:
> > xsasl/xsasl_server.c, xsasl/xsasl_cyrus_server.c,
> > smtpd/smtpd_sasl_glue.c.
>From my logs:
postfix/smtps/smtpd[10521]: warning: unknown[52.253.87.181]:
SASL PLAIN authentication failed: , sasl_username=test
The ": ," is a an empty SASL library "reply":
src/smtpd/smtpd_sasl_glue.c: msg_warn("%s: SASL %s authentication
failed: %s, sasl_username=%s",
src/smtpd/smtpd_sasl_glue.c- state->namaddr, sasl_method,
src/smtpd/smtpd_sasl_glue.c- STR(state->sasl_reply),
src/smtpd/smtpd_sasl_glue.c- sasl_username ? sasl_username :
"(unavailable)");
--
Viktor.
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