Sometimes, it may be desirable for the moderator to automatically approve all moderation requests. This may be appropriate for a single moderator of a “civilized” list when away for the week.
Set up your client to auto-reply to the ‘Reply-To:’ address for all messages with subjects ‘CONFIRM subscribe to listname’ or ‘MODERATE for listname’. Beware that this can be used by malicious people to trick your account to send mail anywhere. In practice, this should not be a problem. If you are worried, forward the messages to a (trusted) friend and ask him/her to appropriately reply to the requests.