The failure notice below was returned in response to an email I sent from my iPhone to a Gmail address in my contact list.
My ISP is 1-and-1 which hosts my private domain.
The email sends fine on my computer using Outlook.
It looks like a security issue with Google.
Can anyone decode the failure notice and help me resolve the issue?
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of
its recipients. This is a permanent error.
The following addresses failed:
<span dir=”ltr”>rmhypctr@gmail.com</span>:
SMTP error from remote server for TEXT command, host: <span dir=”ltr”>gmail-smtp-in.l.google.com</span> (142.250.111.26) reason: 550-5.7.26 This mail is unauthenticated, which poses a security risk to th
e
550-5.7.26 sender and Gmail users, and has been blocked. The sender must
550-5.7.26 authenticate with at least one of SPF or DKIM. For this message
,
550-5.7.26 DKIM checks did not pass and SPF check for [<span dir=”ltr”>ronnpj.com</span>] did not
pass
550-5.7.26 with ip: [74.208.4.196]. The sender should visit
550-5.7.26 <span dir=”ltr”>https://support.google.com/mail/answer/81126#authentication</span> fo
r
550 5.7.26 instructions on setting up authentication. u130-20020a814788000
000b0052ec99f2876si8793755ywa.348 – gsmtp
<span dir=”ltr”>sarah3lakes@gmail.com</span>:
SMTP error from remote server for TEXT command, host: <span dir=”ltr”>gmail-smtp-in.l.google.com</span> (142.250.111.26) reason: 550-5.7.26 This mail is unauthenticated, which poses a security risk to th
e
550-5.7.26 sender and Gmail users, and has been blocked. The sender must
550-5.7.26 authenticate with at least one of SPF or DKIM. For this message
,
550-5.7.26 DKIM checks did not pass and SPF check for [<span dir=”ltr”>ronnpj.com</span>] did not
pass
550-5.7.26 with ip: [74.208.4.196]. The sender should visit
550-5.7.26 <span dir=”ltr”>https://support.google.com/mail/answer/81126#authentication</span> fo
r
550 5.7.26 instructions on setting up authentication. u130-20020a814788000
000b0052ec99f2876si8793755ywa.348 – gsmtp
Retired Rocket Scientist
