General email spam or blacklist policy and best practice

Posted January 1, 2017 2.6k views
EmailUbuntu 16.04

this is not related to hosting part i believe, but i know i would get some expert opinion on this here.

when gmail, yahoo or hotmail blacklist or add an address to their spam filter for example, does all the other emails also get in to the spam list from that domain? for example will also be blacklisted in this case?

thanks in advance

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2 answers

It depends on the level of spam, unusually it’s PER email address, unless they have no good samples from that domain then they may block email from the domain and IP completely.

In most cases if mail is going to spam all the time it’s a good bet it’s domain or server level filtered.

Hello, all

Usually, the IP address of the remote server will be blocked if the email is flagged as SPAM or if the IP address itself is listed on any blacklist.

If you’re just attempting to send outgoing mail from the server, I strongly recommend using a service like Sendgrid or Mandrill. They both offer free tiers. If that’s not an option, you can recreate your droplet in order to pick up a new IP address. The system attempts to reserve the IP for you if you create a new droplet with the same name as the old one. So in order to ensure that you receive a new IP, create the new one before destroying the old one.

Regarding the blacklist itself, I could suggest contacting the DigitalOcean support team directly for further assistance.

As a side note, here is an interesting read on why you may not want to run your own mail server but rather use an SMTP provider:


by Mitchell Anicas
When setting up a web site or application under your own domain, it is likely that you will also want a mail server to handle the domain's incoming and outgoing email. While it is possible to run your own mail server, it is often not the best option for a variety of reasons. This guide will cover many of the reasons that you may not want to run your own mail server, and offer a few alternatives.