the Viphone email list

Is it only your own posts to the mailing list that you aren't receiving? If so, it's most likely because they place all new users on a moderation status for the first few weeks, during which time all their posts have to be manually approved before they are mailed to the list. This helps to prevent spam from getting onto the list. Depending upon the availability of the list's moderators, this can take anything between a few hours to a couple of days.