On Wed, 19 Apr 2017 10:40:41 -0400, William Schults <[log in to unmask]> wrote: > Last error: 5.7.105 554 5.7.105 SenderFilterAgent; Sender > denied as sender's email address is on > SenderFilterConfig list Not a LISTSERV error, but comes from Outlook/Exchange. See https://social.technet.microsoft.com/Forums/Lync/en-US/aac98820-d3a4-4655-9c38-3dee43a9178f/sender-denied-as-senders-email-address-is-on-senderfilterconfig-list?forum=Exch2016MFSM As I understand this, if some Outlook user marks a particular Sender as 'blocked', in recent versions of Exchange, this info gets 'pushed' from that user's Outlook to the central Exchange server, so it may block that sender for everybody. ############################ To unsubscribe from the LSTOWN-L list: write to: mailto:[log in to unmask] or click the following link: http://peach.ease.lsoft.com/scripts/wa-PEACH.exe?SUBED1=LSTOWN-L&A=1