E-mail SSL

E-mail certificates can only be supported on devices and browsers, with the help of which he was being requested.  If you need to reinstall the operating system and does not have a copy of the private key, your certificate must be revoked. Please contact us via the system notifications in the costumer panel.

  • Configuring Sendmail MTA to work with Comodo Certificates

    Sendmail can be configured to encrypt email via the secure socket layer (SSL) when you want to send and receives emails.

    1) Open sendmail configuration file (usually: /etc/mail/ with write access: # vi /etc/mail/

    Now append/modify following directives:

    • define(`confCACERT_PATH',`/etc/mail/ssl/certs') -- location to find certificates
    • define(`confCACERT',`/etc/mail/ssl/ca-bundle.crt') -- Root Bundle file (Make sure you select your server software as Apache & mod_ssl)
    • define(`confSERVER_CERT',`/etc/mail/ssl/sendmail.crt') -- Domain Certificate
    • define(`confSERVER_KEY',`/etc/mail/ssl/sendmail.key')
        And make sure port is set to smtps (secure smtp i.e. port 465): DAEMON_OPTIONS(`Port=smtps, Name=TLSMTA, M=s')dnl

        2) Restart sendmail and secure pop3s/imaps (optional, use the following if using POP/IMAP)

        Type the following commands to restart sendmail and related services:
        • # /etc/init.d/sendmail restart
        • # chkconfig pop3s on
        • # chkconfig imaps on
        • # /etc/init.d/xinetd restart
  • Error: 0x800cc19 in Microsoft Outlook

    This may be caused by software incorrect configuration of SpamKiller (McAfee). Disable Spam Killer and try again.

  • How to re-collect an e-mail certificate?

    Certificate receiving is possible only on the device and browser, with which you applied for it. If you reinstall the system you must have a copy of your private key. If it is not available the certificate must be revoked. For this purpose, please contact us with the address to which the certificate was issued.