Send emails error

Questions and Answers
1
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Hi! I’m trying to send a test email to my Gmail account using the default email provider (sendmail), but It throws this error

7|backend  | [2021-01-21T02:13:35.828Z] error Error: SMTP code:550 msg:550-5.7.26 This message does not have authentication information or fails to
7|backend  | 550-5.7.26 pass authentication checks. To best protect our users from spam, the
7|backend  | 550-5.7.26 message has been blocked. Please visit
7|backend  | 550-5.7.26  https://support.google.com/mail/answer/81126#authentication for more
7|backend  | 550 5.7.26 information. x193si4430478pfd.305 - gsmtp

And if I send it to another email (not from Google) it shows this error

7|backend | [2021-01-21T02:33:21.856Z] error Error: SMTP code:550 msg:550 5.7.511 Access denied, banned sender[MYIPADDRESS]. To request removal from this list please forward this message to delist@messaging.microsoft.com. For more information please go to http://go.microsoft.com/fwlink/?LinkId=526653. AS(1410) [BN7NAM10FT011.eop-nam10.prod.protection.outlook.com]

My server is on DigitalOcean, do I need to make some configuration to it?

2

Badluck, the previous ip owner was kind of spamer and ip got blacklisted. You need to delist that ip or to request another ip from DigitalOcean.

3

Thanks, I create another droplet and I can successfully send an email to a Non-Google Account.