{{tag>[linux alpine mail imap ssl]}}

====== Alpine 2.20 - Configuration for CentOS 7.x======

===== Compile with TLS certificate support =====

==== Prerequisites ====
  * Install development tools (on CentOS 7: yum groupinstall development tools)
  * Install additional dependencies:<code>yum install ncurses-devel openssl-devel pam-devel</code>
  * Create SSL certificate directory:<code>mkdir -p /usr/local/etc/ssl/certs</code>
==== Install Alpine 2.20 ====
  * Download the [[http://patches.freeiz.com/alpine/release/|latest Alpine version]]
  * Decompress the archive: <code>tar -Jxf alpine-2.20.tar.xz</code>
  * Compile Alpine:<code>cd alpine-2.20
./configure --with-ssl-certs-dir=/usr/local/etc/ssl/certs
make</code>
  * Install Alpine:<code>sudo make install</code>

==== Configure mail server certificates =====
  * Copy your mail server certificate to: /usr/local/etc/ssl/certs/imap-mailserver.pem
  * Create symlink with 8 digit hex hash: <code>cd /usr/local/etc/ssl/certs
cert=imap-mailserver.pem
ln -s $cert `openssl x509 -noout -hash < $cert`.0</code>
  * Now do the same for the CA and intermediate certificates.

===== Configure Alpine =====

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

=== Configure IMAP / SMTP with TLS ===
Setup configuration m -> s -> c
  * Personal name: Your name
  * User domain: Your domain
  * SMTP server: <code>mail.server.tld:587/tls/user=user@name</code>
  * Inbox path: <code>{mail.server.tld/user=user@name/ssl}INBOX</code>
  * Default Fcc: <code>{mail.server.tld/user=user@name/ssl}Sent</code> 
  * Customized headers:  <code>From: Personal Name <user@name.tld></code>

Setup imap folders m -> s -> l -> a
  * Nickname: name
  * Server: mail.server.tld/user=user@name/ssl

=== Configure S/MIME ===
  * Create directory structure:<code>mkdir -p ~/.alpine-smime/{ca,public,private}</code>
  * 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:<code>openssl rsa -aes256 -in server.key -out newserver.key</code>