Når man tester mail konfigruationer er Telnet altid en god vej, men når man skal lege med email headers er mutt guld værd.

på debian installeres mutt ved:
apt-get install mutt

herefter skal man oprette en .muttrc file hvor man kan definere forskellige ting for mutt klienten.

vi .muttrc

# Customized headers
unmy_hdr *                      # remove all extra headers first.

my_hdr From: Nyhedemail fra Net-help.dk <This email address is being protected from spambots. You need JavaScript enabled to view it.>
my_hdr Sender: "Gud" <This email address is being protected from spambots. You need JavaScript enabled to view it.>
my_hdr Reply-To: ""et har jeg aldrig sagt" <dev-Null@net-help.dk>

Denne konfig vil gøre at Mutt email bliver afsendt fra This email address is being protected from spambots. You need JavaScript enabled to view it. på vejne af This email address is being protected from spambots. You need JavaScript enabled to view it. og alle reply's på disse email vil blive sendt til This email address is being protected from spambots. You need JavaScript enabled to view it..
mutt kan også konfigureres til mange andre fine ting.