[Bug 274988] add cron.d/dma to periodically flush the queue

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 21 Jan 2026 20:34:14 UTC 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=274988

Xin LI <delphij@FreeBSD.org> changed:

           What    |Removed                     |Added
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           Assignee|bugs@FreeBSD.org            |ronald@FreeBSD.org
                 CC|                            |delphij@FreeBSD.org

--- Comment #2 from Xin LI <delphij@FreeBSD.org> ---
I think dma(8) is not really equipped to function as a complete MTA, and 30
minutes is likely too long given how common greylisting is, even though RFC
5321 Section 4.5.4.1 recommends an interval of 30 minutes or more.

That said, while I agree that a cron.d entry is a reasonable workaround, I
think if stuck mail is a concern, the real problem is that dma(8) should NOT be
used in this scenario. In all my setups, for example, the sole purpose of
dma(8) is to send email to my mail hub (which runs Postfix), and some of them
do not use dma(8) at all and run full Postfix.

In order to really fix this, dma(8) would need a mechanism to perform this
operation by itself, but that probably contradicts its design goals.

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