Postfix windows port

Also should I require any authentication on either of these ports? Please excuse my ignorance in this area :P. Improve this question. Add a comment. Active Oldest Votes. Port 25 should accept anonymous connections, but not for relaying Ports and should reject anonymous connections and allow relaying. Don't apologize for not knowing. We all start somewhere, and nobody on here knows everything Improve this answer.

Jason Berg Jason Berg Actually, port 25 is also needed to send emails, it's used by mail servers to communicate with each other. It's the only outgoing port needed if your server only send emails. The internet needs more like you. Show 2 more comments. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Hybrid Cloud Solutions. Nonstop IT. Exit Federal Government. Partner Program. Find a Partner.

Become a Partner. Open Source Projects. SUSE Italia. SUSE Israel. SUSE Luxembourg. SUSE Nederland. The next step is to configure Postfix to send and receive emails only from the localhost.

By default, the values are similar to these:. In this step, we will test whether Postfix can send emails to an external email account using the mail command. Now, check the email address to which we sent this message. We should see the message in your inbox. In this step, we will set up email forwarding for user root, so that system-generated messages sent to it on the server get forwarded to an external email address. Open it for editing:. With this line, we specify that emails sent to root end up being forwarded to an email address.

When we are done, save and close the file. Running newaliases will build up a database of aliases that the mail command uses, which are taken from the config file we just edited. Ubuntu includes Certbot in their default package repositories, so we can install it by running the following command:.

Run the following command to enable it:. This command orders Certbot to issue certificates with an RSA key size of bits, to run a temporary standalone webserver —standalone for verification, and to check via port 80 —preferred-challenges http. Now that we have our certificate, open main. Once you are done, save and close the file. In short, configuring Postfix as a Send Only SMTP Server involves a series of steps that include installing postfix and adjusting the configuration file.

Today, we saw how our Support Engineers perform this task. Never again lose customers to poor server speed! Let us help you. Your email address will not be published.