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  1. J

    Yahoo - 421 4.7.1 [TS03] All messages permanently deferred

    I use Lotus Domino 8.5.1, on a VPS host. I have no idea about SMTP relays, I will ask them.
  2. J

    Yahoo - 421 4.7.1 [TS03] All messages permanently deferred

    One server, one SMTP sending from dedicated IP, three small clients. None of these has any bulk mailing or even newsletters. This IP was recently assigned to me, maybe it was abused in the past? It is not on any blacklists, however.
  3. J

    Yahoo - 421 4.7.1 [TS03] All messages permanently deferred

    I did fill out the bulk form, after asking for more info several times, they gave me the following answer (I am not a bulk sender and have never had any blacklist issues): Thank you for writing to Yahoo! Mail. We appreciate your responses to our questionnaire. However, based on the...
  4. J

    Yahoo - 421 4.7.1 [TS03] All messages permanently deferred

    Did you ever resolve this problem. I am experiencing the exact same one and have filled out every form on Yahoo's site, no luck.
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