I’m developing a service (saas) that will include sending email (notification, reminders and so on) im working on a ubuntu 20.04 droplet with a generic domain (myservice.com)
on the same droplet there are the frontend service (domain may vary depending on the user), every frontend can be configured by the owner, it includes the owner email that will be used to communicate with their customer.
it worked for a while but (since there are many frontends sending many email from different address) the ip address of the droplet has been listed on spamhaus and the service can no longer send email (which is a big problem, considering that emails are a core part of my service)
spamhaus ask to setup a HELO/EHLO DNS forward (but i have no idea on how to do it)
how can i setup a reliable way to allow email not to be blocked? considering that i have no control on the email address the user configure to send email?
how can i configure the HELO/EHLO DNS as requested by spamhaus?
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!
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.