Yahoo is filtering mail which is preventing some list traffic getting to addresses on their servers: ----- Transcript of session follows ----- .... while talking to mx1.mail.yahoo.com.: >>> DATA <<< 553 Mail to/from [EMAIL PROTECTED] not allowed - Identified as spam source 554 [EMAIL PROTECTED] Service unavailable -- --------------------------------------------------------------- William H. Geiger III http://www.openpgp.net Geiger Consulting Data Security & Cryptology Consulting Programming, Networking, Analysis PGP for OS/2: http://www.openpgp.net/pgp.html E-Secure: http://www.openpgp.net/esecure.html ---------------------------------------------------------------