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i installed zimbra on my Cloudserver (Digital ocean) i can receive emails from other external emails but sending is an issue, I have also set up DKIM, SPF, DMARC for the emails but i still cannot send out emails. Anything seems to be the issue? Please what are possible Resolutions/?

Jasmine
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    What do the smtp logs say? If you’re on Digital Ocean, you could be blacklisted easily, or you could not have a reverse record setup or something similar. Logs would tell you what the other mail servers say. – tilleyc Jan 31 '22 at 19:19

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