gmail and mailing lists

[Karl Berry]

    Gmail starts to reject the mailing list.

I think gmail has changed something relatively recently. I see this
message coming back from gmail frequently now -- not on every message.
I can't yet discern exactly when it happens.

   ----- The following addresses had permanent fatal errors -----
<address@hidden>
    (reason: 550-5.7.1 This message does not have authentication information or 
fails to pass)

   ----- Transcript of session follows -----
.. while talking to gmail-smtp-in.l.google.com.:
>>> DATA
<<< 550-5.7.1 This message does not have authentication information or fails to 
pass
<<< 550-5.7.1 authentication checks. To best protect our users from spam, the
<<< 550-5.7.1 message has been blocked. Please visit
<<< 550-5.7.1  https://support.google.com/mail/answer/81126#authentication for 
more
<<< 550 5.7.1 information. f191si479095wme.151 - gsmtp
554 5.0.0 Service unavailable

   ----- Message header follows -----

That web page of Google's has a bunch of stuff, although I don't think
they are all hard requirements.

Sigh. I so wish we could just live our lives and send our mail without
being subject to the whims of the giant providers. -k