Question

Mail is not working properly on fresh ISPConfig install

Hello everyone!

My name is Nick. I have recently installed ISPConfig on a new DO droplet, with the following setup guide: https://www.howtoforge.com/tutorial/perfect-server-ubuntu-18.04-with-apache-php-myqsl-pureftpd-bind-postfix-doveot-and-ispconfig/

Everything on the server is working fine. I only have some trouble with the email. Sending mail is not a problem, I’ve tested it a lot with Mail-Tester and I get a very high score (plus by even getting a score it means sending a mail is not a problem) But when I’m sending to for example a Gmail address, the mail gets put away in the SPAM folder. And even when sending a mail to an address with a spam filter “SpamExperts” I get a mail back with the message that it could not be sent to the recipient. I then actually get the following error: “550 Sender verify failed (in reply to RCPT TO command)”

Also the receiving part is not working properly. When I send an email to a mail address on my ISPConfig server I get the following error code back: 5.0.0.

Does someone know what I can do make both things work? I hope someone knows! Or maybe how I can better do email.

Thanks in advance!

  • Nick van Kesteren

Submit an answer

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Sign In or Sign Up to Answer

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Want to learn more? Join the DigitalOcean Community!

Join our DigitalOcean community of over a million developers for free! Get help and share knowledge in Q&A, subscribe to topics of interest, and get courses and tools that will help you grow as a developer and scale your project or business.

Hello,

According to the error I believe that this could be due to the content of your email, what are the tips that the Mail Tester site gives you?

What you could do is add an SPF record to your domain name and also a DKIM record to increase the delivery of your emails.

Also make sure to white-list the email that you are sending from via your Gmail account.