Installing SSL certificate

First of all sorry for this being more of a how to then a actual question and sorry if i posted this in the wrong category
Well lets cut to it.
I need to install a SSL certificate on my debian, ispconfig, dovecot, postfix install. I followed this guide: https://www.howtoforge.com/perfect-server-debian-wheezy-apache2-bind-dovecot-ispconfig-3 when i was setting up the server i have already bought the certificate but now i dont know how to install it wish i could give you more info but i dont know which info you need to help me best so please ask and i will provide it!

 

work for me. thanks

 

I'm getting an Apache error: Action 'start' failed.

Checking /var/log/apache2/error.log:

Code:

[Fri Jun 12 09:15:01.128244 2015] [ssl:emerg] [pid 3633] AH02241: Init: Unable to read server certificate from file /usr/local/ispconfig/interface/ssl/ispserver.crt

[Fri Jun 12 09:15:01.128331 2015] [ssl:emerg] [pid 3633] SSL Library Error: error:0D0680A8:asn1 encoding routines:ASN1_CHECK_TLEN:wrong tag

[Fri Jun 12 09:15:01.128346 2015] [ssl:emerg] [pid 3633] SSL Library Error: error:0D07803A:asn1 encoding routines:ASN1_ITEM_EX_D2I:nested asn1 error (Type=X509)

[Fri Jun 12 09:15:01.128352 2015] [ssl:emerg] [pid 3633] AH02312: Fatal error initialising mod_ssl, exiting.

[Fri Jun 12 09:15:53.937750 2015] [ssl:warn] [pid 3749] AH01906: RSA server certificate is a CA certificate (BasicConstraints: CA == TRUE !?)

[Fri Jun 12 09:15:53.937819 2015] [ssl:warn] [pid 3749] AH01909: RSA certificate configured for web01.server:8080 does NOT include an ID which matches the server name

[Fri Jun 12 09:15:53.937918 2015] [ssl:warn] [pid 3749] AH02292: Init: Name-based SSL virtual hosts only work for clients with TLS server name indication support (RFC 4366)

[Fri Jun 12 09:15:53.937942 2015] [suexec:notice] [pid 3749] AH01232: suEXEC mechanism enabled (wrapper: /usr/lib/apache2/suexec)

[Fri Jun 12 09:15:54.029144 2015] [auth_digest:notice] [pid 3751] AH01757: generating secret for digest authentication ...

[Fri Jun 12 09:15:54.036921 2015] [:notice] [pid 3755] FastCGI: process manager initialized (pid 3755)

[Fri Jun 12 09:15:54.085238 2015] [:notice] [pid 3751] mod_python: Creating 8 session mutexes based on 150 max processes and 0 max threads.

[Fri Jun 12 09:15:54.085256 2015] [:notice] [pid 3751] mod_python: using mutex_directory /tmp

[Fri Jun 12 09:15:54.114825 2015] [ssl:warn] [pid 3751] AH01906: RSA server certificate is a CA certificate (BasicConstraints: CA == TRUE !?)

[Fri Jun 12 09:15:54.114841 2015] [ssl:warn] [pid 3751] AH01909: RSA certificate configured for web01.server:8080 does NOT include an ID which matches the server name

[Fri Jun 12 09:15:54.114944 2015] [ssl:warn] [pid 3751] AH02292: Init: Name-based SSL virtual hosts only work for clients with TLS server name indication support (RFC 4366)

[Fri Jun 12 09:15:54.121852 2015] [mpm_prefork:notice] [pid 3751] AH00163: Apache/2.4.7 (Ubuntu) mod_fastcgi/mod_fastcgi-SNAP-0910052141 mod_fcgid/2.3.9 PHP/5.5.9-1ubuntu4.6 mod_python/3.3.1 Python/2.7.6 OpenSSL/1.0.1f configured -- resuming normal operations

[Fri Jun 12 09:15:54.121874 2015] [core:notice] [pid 3751] AH00094: Command line: '/usr/sbin/apache2'

What should I do?