On 19.3.2012, at 21.16, Alex Ha wrote: >>>> dovecot: auth: Error: BUG: Authentication client gave a PID 7542 of >>>> existing connection >>> >>> Oh, right, PIDs of course aren't unique when you're using multiple servers. >>> Try if the attached patch fixes your troubles. If it does, I'll commit it >>> to hg. >>> >> >> Thanks Timo! I will try the patch and report to you. >> > > Hi Timo! > > I tried the patch with 2.0.19 and the dovecot error messages disappeared.
OK, it's going to be included in v2.1.3 and v2.0.20 (if that ever gets released). > I still get a lot of this postfix warnings: > > SASL LOGIN authentication failed: Connection lost to authentication server > > but only for ips which tried a sasl brute force attack. > > "Connection lost to authentication server" could this be because of > the dovecot auth penalties? > so far i did not get any complaints from users. The auth penalties wait for max. 17 seconds I think. Looks like Postfix has a timeout of 10 seconds. You could disable auth penalties, or perhaps Postfix should use 20 second limit.
