New user / password emails are not getting through @gmail.com users
Summary:
For the last two days all our New user / password (or one or the other) emails are reporting as undeliverable just for @gmail.com users. We have the simplest of messages just giving a link and either the username or password that haven't been changed for a year or so. Is anyone else having this problem?
Content (required):
host gmail-smtp-in.l.google.com[74.125.206.26] said:
550-5.7.26 This message does not have authentication information or fails
to 550-5.7.26 pass authentication checks. To best protect our users from
spam, the 550-5.7.26 message has been blocked.
Version (include the version you are using, if applicable):
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