The upgrade to 3.2.4 removed a fix to allow systems that don't use proc https://github.com/pjstevns/dbmail/pull/46/files#diff-c6a39d85434c5cd409eac50923f2ac1e An error is: Jun 26 11:16:32 verdi.p-o.co.uk dbmail-imapd[11913]: [0x80196dc00] Error:[imap] imap_handle_connection(+632): [0x802135340] failed to retrieve fd limits, dropping client connection There is also an optimisations that barfed PostgreSQL with MySQL only function group_concat As it doesn't appear to be a quick fix (tm) I've successfully downgraded to r530319 portdowngrade mail/dbmail 530319
*** Bug 248119 has been marked as a duplicate of this bug. ***
Please note that I tried to mount procfs but it did not resolve the "failed to retrieve fd limits" problem.
The recent merge ed15601 appears to fix both issues, but after successfully connecting and logging in, the imap daemon stops running.
A commit references this bug: Author: bofh Date: Thu Jul 23 06:43:42 UTC 2020 New revision: 542917 URL: https://svnweb.freebsd.org/changeset/ports/542917 Log: mail/dbmail: Fix imap connection failure - Fix failed to retrieve fd limits PR: 247561 Submitted by: ahicks@p-o.co.uk Changes: head/mail/dbmail/Makefile head/mail/dbmail/files/patch-acinclude.m4 head/mail/dbmail/files/patch-src_dm__imapsession.c head/mail/dbmail/files/patch-src_dm__misc.c