my guess: null RFC821 fields (they are RFC compliant) reaching a
non-compliant MTA at work or your home ISP.

/Pete

At 14:03 09/23/2003 Tuesday, Bollinger, Eric W (BearingPoint) wrote:
 >Turns out that I do get the confirm/welcome from my university account, but
 >not from work or yahoo.
 >
 >This is good in the sense that the confirm works, but very bad that listserv
 >does not cooperative with work or yahoo accounts.