if os.path.isfile( "/opt/openvpn/ca/keys/" + username + ".crt"):
    #print "Cert for " + username + " exists"

    # Read in the text portion of the mail
    with open('/opt/openvpn/etc/sendcertagain-mailbody.txt', 'r') as myfile:
        text=myfile.read()

    # Set filenames for the attachment
    configfilename="charite-" + username + ".ovpn"

    # Define key material paths
    keyfilename="/opt/openvpn/ca/keys/" + username + ".key";
    crtfilename="/opt/openvpn/ca/keys/" + username + ".crt";
    cafilename="/opt/openvpn/ca/keys/ca.crt";

    # Open key material
    with open('/opt/openvpn/etc/charite.ovpn.template', 'r') as myfile:
        configtemplatefile = myfile.read()
    with open(cafilename, 'r') as myfile:
        cafile = myfile.read()
    with open(keyfilename, 'r') as myfile:
        keyfile = myfile.read()
    with open(crtfilename, 'r') as myfile:
        crtfile = myfile.read()

    sender = str(Header("Charité VPN administrator", "utf8")) + " <vpn@charite.de>"
    subject = Header("Configuration file to your Charité VPN access","utf8")

    configfile = configtemplatefile + "<ca>\n" + cafile + "</ca>\n<key>\n" + keyfile + "</key>\n<cert>\n" + crtfile + "</cert>\n"
    send_mail_ssl(sender, email, subject, text, files=[], attachments={configfilename: configfile} )
    print "Configuration file was sent to " + email + "."

else:
    print "User " + username + " has no certificate"
    sys.exit(1)
if os.path.isfile( "/opt/openvpn/ca/keys/" + username + ".crt"):
    #print "Cert for " + username + " exists"

    # Read in the text part of the mail
    with open('/opt/openvpn/etc/sendcertagain-mailbody.txt', 'r') as myfile:
        text=myfile.read()

    # Set attachment filenames
    configfilename="charite-" + username + ".ovpn"

    # Define key material paths
    keyfilename="/opt/openvpn/ca/keys/" + username + ".key";
    crtfilename="/opt/openvpn/ca/keys/" + username + ".crt";
    cafilename="/opt/openvpn/ca/keys/ca.crt";

    # Open key material
    with open('/opt/openvpn/etc/charite.ovpn.template', 'r') as myfile:
        configtemplatefile = myfile.read()
    with open(cafilename, 'r') as myfile:
        cafile = myfile.read()
    with open(keyfilename, 'r') as myfile:
        keyfile = myfile.read()
    with open(crtfilename, 'r') as myfile:
        crtfile = myfile.read()

    sender = str(Header("Charité VPN Administrator", "utf8")) + " <vpn@charite.de>"
    subject = Header("Configuration file to your Charité VPN access","utf8")

    configfile = configtemplatefile + "<ca>\n" + cafile + "</ca>\n<key>\n" + keyfile + "</key>\n<cert>\n" + crtfile + "</cert>\n"
    send_mail_ssl(sender, email, subject, text, files=[], attachments={configfilename: configfile} )
    print "Configuration file was sent to " + email + "."

else:
    print "User " + username + " has no Certificate"
    sys.exit(1)