Server blocking the sending of emails. por 25/587

Dear Family,

We configure:

Ubuntu 14.04 Vesta panel Exim4 Bind9

We are receiving emails normally.

Server blocking the sending of emails.

Digital Ocean blocks port 25 and is causing the cancellation of our emails.

We have verified and confirmed that port 587 is open and configured for shipment.

Digital Ocean is not helping in pointing out the error, unfortunately it answers the tickets with contempt.

Error message in the email:  retry time not reached for any host after a long failure period

We performed Check list!

1st Iptables Firewall ports 25,465,587,2525 accept - ok

2 /etc/exim4/exim4.conf.template - OK daemon_smtp_ports = 25: 465: 587: 2525 tls_on_connect_ports = 465

3rd ssh #nmap localhost Iptables 25 / tcp open smtp 53 / tcp open domain 110 / tcp open pop3 143 / tcp open imap 465 / tcp open smtps 587 / tcp open submission

4th DNS digital panel ocean - OK

5º We sent yahoo emails to our accound email and the error was: 550: 5.1.1 The email account that you tried to reach does not exist.

Some foreign aid because Digital Ocean shows no solution.

We have not erased our server yet since google is scoring 97/100.

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.

There are several IP blocklists, especially yahoo is picky. You might want to check that your IP is not in those blocklists.