hostname.md

Hostname Uses

NeoMutt uses two forms of the hostname:

The Hostname, e.g. 'laptop.example.com', is only referenced by mutt_fqdn(), which is used to:

• expanding aliases
• determine if an address is you
• match encryption keys
• expand outgoing email addresses

The ShortHostname, e.g. 'laptop', is used to:

• generate the Message-ID header
• generate some unique temporary filenames
• fallback if the FQDN is missing

Hostname Sources

To find the hostname the code checks multiple sources in order. Note: There's no default in init.h

1. Config file

   • /etc/neomuttrc
   • ~/.neomuttrc

2. Command line

   • neomutt -e "set hostname=laptop.example.com"

3. uname(2)

   • set the ShortHostname (e.g. 'laptop')

4. First match of:

   1. configured DOMAIN configure --with-domain=example.com

   2. file

      • /etc/mailname
      • /etc/mail/mailname

   3. dns

      • gethostname() -- For a hostname
      • getaddrinfo() or getaddrinfo_a() -- For a FQDN