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sendgrid / sendgrid-java

The Official Twilio SendGrid Led, Community Driven Java API Library
https://sendgrid.com
MIT License
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sender authentication error 550 5.2.0 #719

Closed letmagnau closed 2 years ago

letmagnau commented 2 years ago

Issue Summary

Hi, we are having some issues with Sender Authentication on SendGrid service on Azure we are following the guideline as a documentation process about granting Sender on our domain. We leave that sendgrid manage spf and DKIM with automated security but we are experimenting any Blocks when it tries to send mail to custom mail server domains. Issues are tracked with "550 5.2.0 M5i6nOHWWwRIsM5i6nd3hE dominio non valido / invalid domain" We found some similar issues based on Antispam mechanisms but also including a plain TXT in DNS Records , they are passing the checks on services such as mxtoolbox.com but it does not fix our problems. Can you help us ? regards.

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Technical details:

JenniferMah commented 2 years ago

Thanks for submitting a GitHub issue! We are very sorry that you are running into this problem. In order to better serve you, as this does not present itself as a library specific issue, we would like to ask that you reach out to our support team at support.sendgrid.com.