• Install development tools (on CentOS 7: yum groupinstall development tools)
• Install additional dependencies:

  yum install ncurses-devel openssl-devel pam-devel

• Create SSL certificate directory:

  mkdir -p /usr/local/etc/ssl/certs

• Download the latest Alpine version
• Decompress the archive:

  tar -Jxf alpine-2.20.tar.xz

• Compile Alpine:

  cd alpine-2.20
  ./configure --with-ssl-certs-dir=/usr/local/etc/ssl/certs
  make

• Install Alpine:

  sudo make install

• Copy your mail server certificate to: /usr/local/etc/ssl/certs/imap-mailserver.pem
• Create symlink with 8 digit hex hash:

  cd /usr/local/etc/ssl/certs
  cert=imap-mailserver.pem
  ln -s $cert `openssl x509 -noout -hash < $cert`.0

• Now do the same for the CA and intermediate certificates.

You can save your config in a remote IMAP folder so that you can use the same config on other locations.

• Got to RemoteConfigSetup: m → s → z
• Convert addressbook to a remote addrbook? y
• Convert signature file “.signature” to a literal sig ? y
• Remove local addressbook: m → s → a, choose .addressbook, press d, then both
• Create alias to start alpine:

  #Add line below to ~/.bashrc
  alias alpine='alpine -p "{mail.server.tld/user=your@emailaddress.com/ssl}remote_pinerc"'

Setup configuration m → s → c

• Personal name: Your name
• User domain: Your domain
• SMTP server:

  mail.server.tld:587/tls/user=user@name

• Inbox path:

  {mail.server.tld/user=user@name/ssl}INBOX

• Default Fcc:

  {mail.server.tld/user=user@name/ssl}Sent

• Customized headers:

  From: Personal Name <user@name.tld>

Setup imap folders m → s → l → a

• Nickname: name
• Server: mail.server.tld/user=user@name/ssl

• Create directory structure:

  mkdir -p ~/.alpine-smime/{ca,public,private}

• Copy public key to in ~/.alpine-smime/public, filename like: mailaddress@domain.com.crt
• Copy private key to in ~/.alpine-smime/private, filename like: mailaddress@domain.com.key. If you have not encrypted your private key, do it now:

  openssl rsa -aes256 -in server.key -out newserver.key