Subj : Re: Interfacing FD with
To   : mark lewis
From : Wilfred van Velzen
Date : Wed Sep 27 2017 08:48 am

Hi mark,

On 2017-09-26 17:13:14, you wrote to Joaquim Homrighausen:

 ml> yes, fileboxes are the same as spool directories... anything you drop
 ml> in them is automajikally flicked over the wall and appears in the
 ml> destination system's inbound...

 ml> now the question is if i can have FD and binkd both working with the same
 ml> filebox/spool directories so that mail can be picked up by either
 ml> method...

The problem with fileboxes is that, file-locking and/or lock-file usage for 
them is undefined and probably non existent. So the only way to savely use them 
is to use atomic operations when you create files, or even read+delete them. 
And this should work on all os's and even in mixed environments where for 
instance a linux and a windows part of a system access the same (network) 
drive. Atomic operations under these constraints is hard to get right, or maybe 
even impossible under all circumstances! And all software used should be able 
to do that.

So I regard fileboxes as a kludge, one should only use as a last resort when 
nothing else works.

Bye, Wilfred.

--- FMail-lnx64 2.1.0.18-B20170815
 * Origin: FMail development HQ (2:280/464)

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