Mail Server SMTP 587 Port with SASL and TLS

Very helpful video.

Any solution of this in zimbra server? I would like to use 587 for user in their outlook/thunderbird client to connect with zimbra server.

hi @mailserverguru, port 25 is blocked on my cloudserver, I want to send emails from cyberpanel (on ubuntu 20.04 - uses Postfix) from port 465 , possibly from 587 but if send from 587, I want to send from my server, and not from sendgrid or other delay. Is this possible?

Do you also have a tutorial to sort out SPAM emails along with Centos7/8 + Postfix + Dovecot?

This is the best tutorial on the topic!

Thanks for the video. Few things I would like to mention:
1. Please make cyrus to authenticate using mysql database because I don't think in production server we create thousands of users using useradd command in the linux.
2. It would be nicer if you configure Letsencrypt for SSL instead of self-signed cert.
3. Please make a multi-domain postfix configuration hosted from a single machine.
Please make a video mentioning the following topics.
Thank you

A tutorial on sending from postfix to office 365 without a connector would also be interesting

Very nice explanation. I’m trying to configure rhel7.5 as client to a smtp relay server . But no luck yet . Please make a video for linux client also. It will be very helpful .

This is a nice video. I was searching for this kind of video tutorial to configure relay server since a couple of days ago. But I have some confusion:
what username and password we can use for sasl authentication? How can I provide sasl authentication credentials to smtp clients?
Is there a way to permit relay mail on the basis of sender domain?

If possible please post a video tutorial to configure and set up a stand alone relay server using postfix.
Thank you for this awesome tutorial. I am subscribing your channel.

im using ssl, my sever keeps trying to use port 25 which is blocked, i dont get how to block postfix from using port 25. what setting in master.conf will just block port 25?

very helpful and well explained to learn postfix.