I'm using deliver (1.0.5) with Postfix (2.1.6). I made a test for a few minutes in a moderated busy server. While most mails was delivered, a lot of them failed with this error:
deliver(userfoo): Oct 15 09:58:31 Error: net_connect(/var/run/dovecot/auth-master) failed: Resource temporarily unavailable Sounds to me something like not enough auth-master to answer every concurrent deliver. Any hint? Regards, maykel PD: If there any other info I could give let me know.