[Mailman-Users] multiple senders listed

[Cameron Camp]

my mailing list is working fine, but there are 2 issues:

1. mail appears to come from 2 addresses, i.e.: 
From: noreply at domain.com, rn at www.domain.com

2. Return Path lists apache user, so:
Return-Path: www-data at www.domain.com

how can I fix these?

Thanks,
Cameron