I'm petty sure I messed up attributions, so am deleting them. >> I believe this is a DMARC issue. Yahoo, among other places, has set >> their dmarc records to p=reject: >> So, if your mail hosting provider enforces dmarc,(gmail does) and you >> get mail from a list that doesn't rewrite the headers, and people >> from places like yahoo post to the list, you'll likely get some form >> of warning about being being kicked off the mailing list every now >> and then. The frequency depends on how often people from p=reject >> places post, and what the settings are for bounce handling of the >> mailing list in question. > This is indeed what happened. An email from yahoo.com.uk caused gmail > to reject all the mails sent by that user because of the yahoo DMARC > settings. Say it isn't so: *An* e-mail, just *one* from yahoo.com.uk caused every gmail user to have his account disabled. I'd heard of the DMARC thing with mailing lists before, but had not known it enabled single e-mails of mass destruction. > We have now set the mailing list to rewrite headers. That also has set > the From: of the email to the Mailing list and not the Original Author. > The author is moved to the CC: block and you can still easily see who > sent it and my email client (thunderbird) still does things the same way > (reply to list sends to the list, reply sends to the original author). I'm truly amazed that rewwriting headers is not the default. -- Michael hennebry at web.cs.ndsu.NoDak.edu "Sorry but your password must contain an uppercase letter, a number, a haiku, a gang sign, a heiroglyph, and the blood of a virgin." -- someeecards