After much debugging I can finally send mails to the list :)
The problem is that the open-zfs.org mail server (AwesomeProxy?) has a broken implementation of ESMTP's pipelining, specifically if the end of DATA ".<CRLF>" is sent together with the "QUIT<CRLF>" (valid for pipelining) the send will timeout and never succeed. As a workaround I've told our postfix server to force disable pipelining for mail.open-zfs.net even though it advertises it supports it. For reference this involves adding the following to /usr/local/etc/postfix/main.cf: smtp_discard_ehlo_keyword_address_maps = cidr:/usr/local/etc/postfix/discard_ehlo_keywords /usr/local/etc/postfix/discard_ehlo_keywords contents: # Openzfs mail server has broken pipelining 199.101.102.98/32 silent-discard, pipelining cc'ed developer@ as postmaster@ often goes unread ;-) Hope this helps. Regards Steve _______________________________________________ developer mailing list [email protected] http://lists.open-zfs.org/mailman/listinfo/developer
