Could also be people set to digest.  They will get their copy later and are probably not included in the 272 count.

>I have the following problem.
>
>I just sent a quiet set +adm for * command to listserv.
>
>It reported this command had been carried out for 342 subscribers.
>
>I then sent out a message with the ADM: prefix.
>
>Listserv reported that it had distributed to 272 subscribers.
>
>As I write it has occurred to me that the difference in numbers is to be
>explained by subscribers set to NOMAIL. Is that so, or is there
>another problem?
>
>
>Dennis Newson


--
Bill Verity - 814-865-4758  Fax: 814-863-7049
Listserv Administrator
215A Computer Building - Information Technology Services, Penn State University
At the office - on my Mac, of course ;-)