<div dir="ltr">TL;DR: We think we have fixed the problems with bounces and email delivery being disabled. If you see a notice of your address being disabled due to bounces, please contact <a href="mailto:llvm-admin@cs.uiuc.edu">llvm-admin@cs.uiuc.edu</a> and let us know. You may have missed some emails. We're very sorry, but there is nothing we can do. The archives should be complete though.<div>
<br></div><div>----</div><div><br></div><div>We know that there has been chaos on the lists as people stop having email delivered to them due to bounces. This has effected *every gmail user* as well as gmx, and many university email servers. This is what I believe has happened:</div>
<div><br></div><div>- Mid April Yahoo turned on a DMARC policy of "reject"[1]</div><div> - Some other email providers may have as well, we just know about Yahoo.</div><div>- Users with an @<a href="http://yahoo.com">yahoo.com</a> email address send mail to an LLVM project list</div>
<div>- The mailing list server sends this email to all recipients</div><div>- Because of how DMARC verification proceeds, the emails fail verification when coming from the mailing list server</div><div>- Conforming mailers respect the DMARC policy and bounce the email *back to the mailing list*</div>
<div>- The mailing list is configured to disable email delivery after a sufficient number of bounce emails</div><div>- All the *recipients* of the emails whose mailers respect DMARC end up with delivery disabled, even though they didn't send any of the email!!!!</div>
<div>- Chaos. Fire. Burning. Sorry.</div><div><br></div><div>Ok, what are we doing?</div><div><br></div><div>1) I have disabled bounce processing on this list to prevent immediate and ongoing problems. This is temporary workaround, but it should be effective.</div>
<div>2) Tanya and I have reset everyone's email delivery which was disabled due to bounces.</div><div>3) John Criswell and folks at UIUC are going to work very hard to upgrade the mailman running the lists.</div><div>
4) I'm going to work with John to ensure we use the new settings in mailman which make mailing list emails verify cleanly under DMARC.</div><div><br></div><div>What does this mean for you?</div><div><br></div><div>- You may have missed emails to the list. Check the archives as needed, they should have all the emails.</div>
<div>- If you use Yahoo for mail, *please don't use that account to send email to the LLVM lists* until #4 above is complete. Every email will cause a flood of thousands of bounces to hit the list server.</div><div>- Be aware that #4 above will change how the emails look on the list. Here is a summary of what will happen:</div>
<div> - Your emails to the list will have a "From:" which has been rewritten to be from the mailing list.</div><div> - Your original "From:" address will be merged into "Reply-To:" if possible to try and keep you CC'ed on the emails.</div>
<div><br></div><div><br></div><div>Very sorry for the trouble. I'll try to reply to any questions you have.</div></div>