Adding reply-to option to mailutils.conf instead of -r on command line

If I need to send an email from home computer I have to remember to
include the -r flag to use a proper domain instead of me@home-computer,
which is quite annoying. So, after a bit of web searching I found that
I should be able to put it in my /etc/mailutils.conf as per below:

According to $ mail --config-help (trimmed due to line length):

address { 
email-addr <email: address>; 
email-domain <domain: string>;
};
                       
So, I thought this would work fine:

address { 
email-addr [email protected]; 
email-domain "simonh.uk";
};

But mail keeps being me@home-computer and going to spam.

Any ideas?

Cheers.

-- 
Web: https://simonh.uk
Email: [email protected]