Newbie here. My outgoing gmail via my DSL's Centurylink server has been blocked for a few days, after working for many years, with the following message in Apple Mail: "The sender address xxxxxx@gmail.com was rejected by the server smtp.centurylink.net. The server response was: [F3] Mail rejected by policy. Blacklisted" How does a gmail user end the blacklisting? I've telephoned Centurylink for guidance, and their call center in the Philippines tells me Centurylink won't help and I have to contact Google. I've tried with Google which ends up at https://support.google.com/mail/contact/msgdelivery, but but it's only for IT admins and requires information I don't have access to, and there is no phone number provided. Advice would be appreciated.
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