"I have installed mailman3".

What operating system is installed?

You should go through the following process from the command-line as a separate step:

$ ls $ which mail $ mail nirmal＠iitm.ac.in

In other words, send an email from Linux, outside of mailman. Does that work?

On Thu, Oct 9, 2025 at 3:18 PM nirmal--- via Mailman-users < mailman-users@mailman3.org> wrote:

I have installed mailman3. But after logging in I am not getting confirmation mail. The message displayed is hereby follows:- example.com Search all lists Sign In Sign Up Manage lists ×Confirmation e-mail sent to nirmal@iitm.ac.in. Verify Your E-mail Address We have sent an e-mail to you for verification. Follow the link provided to finalize the signup process. If you do not see the verification e-mail in your main inbox, check your spam folder. Please contact us if you do not receive the verification e-mail within a few minutes.

I would say the fact that you are still seeing example.com also means you haven't strictly followed the installation instructions. That domain, example.com, while not such a major issue, means you've not edited your settings.py. Besides that, you should have tested your Postfix configuration (or your MTA) to ensure that it is capable of sending emails to the outside world. In fact, a functional MTA is a prerequisite for MM3. So at this juncture, check your MTAs logfile.

-- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254 7 3200 0004/+254 7 2274 3223 In an Internet failure case, the #1 suspect is a constant: DNS. "Oh, the cruft.", egrep -v '^$|^.*#' ¯\_(ツ)_/¯ :-) [How to ask smart questions: http://www.catb.org/~esr/faqs/smart-questions.html]