[Dovecot] Bug in Exim->Dovecot auth

Hi.

I'm using SMTP auth with Exim authenticating against Dovecot's auth socket. My (excellent) SMTP test tool "swaks" (http://jetmore.org/john/code/#swaks) tries multiple auth mechanismus consecutively which leads to the following message in Dovecot's log file:

Error: auth(default): BUG: Authentication client gave a PID 6738 of existing connection

I'm not sure where to report this bug, exim's or dovecot's mailing list, so I'll try here first :)

Chris

<- 250-AUTH PLAIN LOGIN <- 250 HELP -> AUTH PLAIN AHh5egBra2s= <** 535 Incorrect authentication data -> AUTH LOGIN <** 435 Unable to authenticate at present *** No authentication type succeeded -> QUIT