On 06/01/2019 02:26, John Fawcett wrote: > On 05/01/2019 15:49, Mark Hills wrote: >> I use IMAP preauth; I connect with Alpine over SSH which is very useful. >> >> The last few upgrades this has become more difficult to to. Last time >> (moving 2.2 -> 2.3, I think) I had to put in a workaround: >> >> stats_writer_socket_path = >> >> It prevented /usr/local/libexec/dovecot/imap attempting to >> connect to a central stats service. >> >> As of an upgrade today (2.3.2.1_1 -> 2.3.4_3 on FreeBSD) it looks like >> that 'fix' stopped working, and I get: >> >> imap(mark,)Error: net_connect_unix() failed: Permission denied >> >> It goes to stderr, which breaks Alpine. >> >> "()" is actually the filename. It seems that the empty string is no longer >> an indication to disable it. Here it is with the default configuration: >> >> imap(mark,)Error: net_connect_unix(/var/run/dovecot/stats-writer) failed: >> Permission denied >> >> I do also have a dovecot running as a system daemon, and, interestingly, >> disable this and it's 'fixed'; no attempt to connect. However, disabling >> the service is not an option (needed for smartphone) >> >> The best I've come up with so far is when using preauth to hack it to send >> stderr to /dev/null. And yes, probably Alpine is at fault for interpreting >> stderr content (separate issue) >> >> * Is there a way to cleanly disable reporting to the stats service? >> Previously, running as preauth was all very clean. >> >> * Just wanted to highlight that IMAP preauth is really useful. Even >> though it might not be mainstream, it seems healthy to be able to easily >> install dovecot as an unprivilidged user in a "unixy" way. >> >> I'm on FreeBSD 11.2, with dovecot from ports. dovecot.conf below. >> > Can't see anything in the Dovecot 2.3.4 code that would give this > problem, setting > > stats_writer_socket_path = > > will overwrite the default value and dovecot does not attempt to open a > socket in that case. > > Using your configuration (though not FreeBSD) I don't get the > net_connect_unix error whether I use a blank setting or leave the default. In > the case of leaving the default I do get an additional process > (dovecot/stats). No errors on connecting to the imap service or by running > preauth (with the dovecot daemon already running). > > The net_connect_unix() error with a zero length socket name is inexplicable > to me, unless it's got a non printing character in it or there is something > different happening on FreeBSD. > > One suggestion is to run with the default setting, but look at resolving the > permission problem for the default socket creation at > /var/run/dovecot/stats-writer rather than working round it. > > John > Just following up, I don't get the error when I run preauth as root with -u parameter. I do get something similar when I run as the user (this wil the socket path set to blank)
Centos 7: Error: net_connect_unix() failed: Connection refused FreeBSD 11.2: Error: net_connect_unix() failed: No such file or directory So it's close. If I get time I'll see if I can track it down. John