[Exim] forced delivery to a subset of the recipients

hi,

i have a message having a number of recipients. the delivery is almost
completed, except for one domain. when i do a verbose forced delivery,
it seems that it stops and then eventually times out after the last
`rcpt to:' (i mean, i think, the remote side stops). i suspect that
the remote has some problems, but i can't really contact those
guys.. i thought that i could try a forced delivery to all but that
particular recipient (or even one by one), that might reveal some more
info on where the problem is. the question is: can i do that ? if yes,
how ? exim verison is 3.14.

thanks a lot,

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