I haven't found much in the way of merging sendmail queues around, and 
asking in the usual places didn't garner much, so I thought I'd ask 
here. I know I should be moving to postfix or something else, but one 
thing at a time! :)

I have a chroot environment that I'm using sendmail from within, and 
then subsequently merge the chroot mqueue with the outer. Currently 
what I'm doing is delivering solely within the chroot directly to the 
queue, and then at regular intervals taking a snapshot of those 
messages waiting delivery (for bytecount purposes) and actually running 
the queue. I am using a 1h MinQueueAge for that part.

What I'd like to do, though, to improve the accuracy of the bytecount 
run attempt *merge* the inner chroot mqueue with the outer so it can be 
dealt with normally by the primary sendmail daemon, after the first 
attempt done from within the chroot environment.

Is it possible to just "mv" the queue files into the system's primary 
mail queue after the first-run attempt and not worry too much about 
collision if I check the existence of the destination file beforehand? 
Or, does sendmail have a "better" way of doing this that I'm just not 
aware of?

Thanks for reading this far,
Marc