Hello LISTSERV, Ever since our upgrade to 14.5 we are getting rejections from yahoo subscribers to our lists. Anyone else experience this. I have changed nothing just did the upgrade. -- Best regards, Tim n error was detected while processing the enclosed message. A list of the affected recipient follows. This list is in a special format that allows software like LISTSERV to automatically take action on incorrect addresses; you can safely ignore the numeric codes. --> Error description: Error-for: [log in to unmask] Error-Code: 0 Error-Text: Mailer mx1.mail.YAHOO.COM said: "554 Message type not allowed. UP Email not accepted for policy reasons. Please visit http://help.yahoo.com/help/us/mail/defer/defer-04.html [#4.16.3:120]" Error-for: [log in to unmask] Error-Code: 0 Error-Text: Mailer mx1.mail.YAHOO.COM said: "554 Message type not allowed. UP Email not accepted for policy reasons. Please visit http://help.yahoo.com/help/us/mail/defer/defer-04.html [#4.16.3:120]" Error-for: [log in to unmask] Error-Code: 0 Error-Text: Mailer mx1.mail.YAHOO.COM said: "554 Message type not allowed. UP Email not accepted for policy reasons. Please visit http://help.yahoo.com/help/us/mail/defer/defer-04.html [#4.16.3:120]"