I could be wrong, but it looks like Gmail may be 'enforcing' SPF or other authentication methods?
Was your email sent from the domain you are sending from here? Brad On Mon, 22 Apr. 2019, 22:34 John Leslie, <j...@jlc.net> wrote: > I got a surprise trying to confirm a dental appointment > > status=SOFTBOUNCE (host alt2.aspmx.l.google.com[172.217.192.26] said: > 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. > > Obviously, I have reverted to telephonic reply... > > But this seems like something worth understanding; and this list seems > an excellent place to find someone who understands what google is doing. > > Anyone volunteer to give me a pointer? > > -- > John Leslie <j...@jlc.net> > > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop >
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