List of VPS Hosting that Provides Open Port 25

Before we go into the VPS hosting list that provides open port 25, let’s see why we need open port 25 & why this port is blocked by many hosting providers.

Port 25 is an SMTP (Simple Mail Transfer Protocol) port, or in other words, port 25 is used to send emails out and to receive emails as well. Just like you need port 80 to be open in order to access any website, you need port 25 to communicate with another mail server.

Now, here I would like to clarify one important thing. Port checker tool like yougetsignal tells whether the port is open for incoming traffic or not. In other words, if it tells the port is open, this means emails can reach your server. Therefore you can receive emails.

Nowadays, spamming is a very big issue. Every month around 300 billion emails are exchanged and out of that around 250 billion emails are spam. Therefore, in order to protect users from unwanted emails, ISP started blacklisting servers involved in spamming. There is also 3rd party spam monitoring agency that notifies ISP of spamming from the server and subsequently gets blacklisted.

Apart from that, blacklisted IP lowers the reputation of VPS providers and therefore affects sales. Also, sometimes the whole subnet gets blacklisted i.e. all 256 IPs.

Not only that, the law enforcement agency of the country can accuse/arrest the hosting provider for assisting in the spread of spam.

Therefore, the VPS provider in order to save their infrastructure from being abused simply blocks port 25. This means no emailing.

We know email marketing is very powerful in today’s interconnected digital world. The outright ban by VPS providers is hurting email marketers. Bulk email marketing service providers like Aweber, MailChimp, Sendgrid, etc., though efficient and powerful can be quite expensive. Therefore, self-hosted emailing infrastructure is the only solution.

Here, I have listed VPS hosting which provides open port 25.

There are spam detection databases such as spamhaus.org that blacklists IPs that indicate potential spamming.

As a result of this, email clients have leveraged on third-party IP blacklist databases to assign a reputation to your server or sending IP. IP reputation reflects the quality of emails sent out of a server. This implies that Email clients are scoring your server based on how genuine emails you are sending out of your server. This helps them to decide whether to place your emails in their customer’s inbox or the hell of the spam folder. Once ISPs records lower reputations, emails from their server will be going to the spam folder. This will make them record low sales. Low Sending scores which is a function of reputation will also make them have low credibility as a company.

Also, there are certain laws by the government that places fine on any ISP that allow their servers to be used for spamming. To save themselves from these unwanted fines, ISPs simply block their port 25.

But, all this outright ban on port 25 by ISP’s arent favoring Email marketers. We all know that the ROI in email marketing is up to 4400%. Subscribing to email marketing companies for instance: systeme.io, getresponse, etc are quite expensive. To maximize our ROI in email marketing, we still need to find a workaround for the port 25 issues. This will help us to set up our mailing system and send unlimited emails for as low as $12. You can check my Postal SMTP Setup Guide to learn how to build your own SMTP server for free.