Cannot digest subscribe

Hi all,

I just signed up for the mailing list, but when I tried to change
over to a digest subscription, I got an error back from the server.
The instructions I followed were from http://archives.postgresql.org/
pgsql-general/ .

 From the few e-mails I've gotten so far, it looks like this is a
nice community!

Thanks,

     Don

Begin forwarded message:

> From: majordomo-owner@postgresql.org
> Date: March 4, 2007 9:28:30 AM EST
> To: Don Lavelle <don.lavelle.bulk@gmail.com>
> Subject: Majordomo results
> Reply-To: majordomo@postgresql.org
>
>
>>>>> subscribe-digest pgsql-general
> **** The subscribe command did not succeed.
> ****
> **** The command mode "digest" is invalid.  The following command
> **** modes, separated by hyphens ('-') or equals signs ('=') are
> valid:
> ****   noinform
> ****   nolog
> ****   nomessage
> ****   nowelcome
> ****   quiet
> ****   rule
> ****   set
> ****   welcome
>
> Valid commands processed: 1
> 0 succeeded, 0 stalled, and 1 failed.
>
>
> Use the following command:
>   sessioninfo aacb79d2f88ad99a727d23a2ec10a3bcef7c9882
> to see technical information about this session.
>