It may or may not be possible using the current MTA implementation,
but I know you are one of the authors of zmailer, it is possible for you.
Layering problem can be solved by using two different sendmail configuration
files, one is for DUL and another is for non-DUL.
I don't intend you to do, however I think it can be solved by
technology.
-- Computer Systems Laboratory, Fujitsu Labs. kumon@flab.fujitsu.co.jp - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/