admin thread related to e-mail lists and e-mail blocking Context I was starting to stop receiving a lot of e-mail then e-mail lists told me I was bouncing and eventually I was kicked off one list. That list was air-l Sympatico run by Bell Canada contracts it's e-mail out of Microsoft's hotmail. Here is an explanation by another list owner about yahoo. ________________________________________ From: JiscMail Helpline <helpline@JISCMAIL.AC.UK> Sent: 11 April 2014 14:53 To: OWNERS-ANNOUNCE@JISCMAIL.AC.UK Subject: [OWNERS-ANNOUNCE] Issue affecting Yahoo email subscribers to lists OWNERS-ANNOUNCE: You have received this message because you are registered as an owner of a JiscMail mailing list. --------------------------------------------------------------------------------------------------- Yahoo have recently changed the security settings on their email servers which is causing major issues with mailing list services across the world, including JiscMail. Yahoo have changed their security settings in a way that causes emails sent through a mailing list service to be identified as junk-mail by email providers that using certain security systems. This causes many email providers including Google, Microsoft and Yahoo themselves, to reject any list emails originating from a Yahoo account. These rejections, can in some cases, cause subscribers to be removed from lists due to the number of rejected messages. In order to protect our subscribers and our service we have been advised to stop Yahoo subscribers from posting to *any* JiscMail lists and we have implemented this change. Yahoo subscribers will still receive messages from lists. If a Yahoo subscriber tries to post to your list, the message will be forwarded to the list owner(s) with this message: The enclosed message, found in the L-SOFT mailbox and shown under the spool ID 278571919 in the system log, has been identified as a possible delivery Error notice for the following reason: mail origin is listed in the "Filter=" List header keyword (or its default value for the L-SOFT list). Unfortunately this message cannot be edited. We would also recommend that if you have subscribers on your list using Yahoo email accounts then we would ask you to: 1. Post a message to your list (or contact them off the list) and pass on the information from this message. 2. Ask your Yahoo subscribers to re-join your list using a non-Yahoo email service provider. 3. Ask your Yahoo subscribers to contact Yahoo to complain about the changes to their security settings. We are also posting this message to JISCMAIL-NEWSLETTER but are aware that not all of our subscribers are members of this list, so you may wish to post this message to your list. We have stopped email addresses being automatically deleted from lists - in case Yahoo subscribers have already posted to lists. More information on this issue can be read here: http://www.computerworld.com/s/article/9247512/Yahoo_email_anti_spoofing_pol...