On 22/07/2024 12:13, Jeremy Harris via Exim-users wrote:
On 22/07/2024 11:26, Paul Warren via Exim-users wrote:
by having the "file_transport" conditionally deliver to a directory?

That would depend on how conditional you need to handle.

You say
"Our system supports both Maildir and mbox being specified in .forward files"
- exactly how?

Based on whether the specified mailbox ends with "/".

Do you ever want anything but Maildir format, for Sieve filters?

Not necessarily for Sieve filters, but we definitely do for Exim filters.

(If yes - how would Exim find out which?)

As above - based on the presence of a trailing slash.

The file_transport vs. directory_transport in the redirect router
is independent of the file= vs. directory= in the appendfile
transport.  You could point both to the same transport
(so long as that transport deals properly with whatever it gets
handed in $address_file, if it uses that)

I can't see how to make a single transport switch between file and directory delivery.

That's the issue - Exim unavoidably uses file_transport for "inbox", because it doesn't end with "/", so if I want "inbox" to go to a maildir, then my file transport has to send everything to a maildir (AFAICT).

Paul



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