imap_ssl_cert - connects to an IMAP server using SSL and saves the server certificate into a .pem file

       Jonathan Buhacoff <jonathan@buhacoff.net>

        Fri Nov 11 03:38:13 AST 2011
        + version 0.1

        Copyright (C) 2011 Jonathan Buhacoff

        This program is free software; you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation; either version 3 of the License, or
        (at your option) any later version.

        This program is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.

        You should have received a copy of the GNU General Public License
        along with this program.  If not, see <http://www.gnu.org/licenses/>.

        http://www.gnu.org/licenses/gpl.txt

perl v5.38.2                                       2024-07-02                                   IMAP_SSL_CERT(7)

       This utility requires the following perl modules to be installed:

       Getopt::Long Mail::IMAPClient IO::Socket::SSL Net::SSLeay

Printtheserver'sSSLcertificatechain
        $ perl imap_ssl_cert.pl -H imap.server.com > ca_file.pem
        $ cat ca_file.pem

        -----BEGIN CERTIFICATE-----
        MIID1zCCAr+gAwIBAgIQPr3bVk0SkuXygjxgA7EVGDANBgkqhkiG9w0BAQUFADA8
        [...snip...]
        0FF4warjskrfqaVtWeIV58LJheaM4cPJkc2M

        -----END CERTIFICATE-----
        $ openssl x509 -in ca_file.pem -text

       imap_ssl_cert - connects to an IMAP server using SSL and saves the server certificate into a .pem file

       --timeout <seconds>
           Abort  with  critical status if it takes longer than <seconds> to connect to the IMAP server. Default
           is 60 seconds.  The difference between timeout and critical is that, with the default settings, if it
           takes 45 seconds to connect to the server then the connection will succeed but the plugin will return
           CRITICAL because it took longer than 30 seconds.  Also known as: -t <seconds>

       --hostname <server>
           Address or name of the IMAP server. Examples: mail.server.com, localhost,  192.168.1.100  Also  known
           as: -H <server>

       --port <number>
           Service  port  on the IMAP server. Default is 143. If you use SSL, default is 993.  Also known as: -p
           <number>

       --verbose
           Display additional information. Useful for troubleshooting.

           Also known as: -v

       --version
           Display plugin version and exit.  Also known as: -V

       --help
           Display this documentation and exit.  Also known as: -h

       --usage
           Display a short usage instruction and exit.

http://en.wikipedia.org/wiki/X.509http://en.wikipedia.org/wiki/Privacy_Enhanced_Mailhttp://tools.ietf.org/html/rfc1422http://search.cpan.org/~mikem/Net-SSLeay-1.42/lib/Net/SSLeay.pmhttp://search.cpan.org/~plobbes/Mail-IMAPClient-3.29/lib/Mail/IMAPClient.pod

        imap_ssl_cert -H imap.server.com > server_ca_file.pem
        imap_ssl_cert -?
        imap_ssl_cert --help