Internal Server Error 500

[jcamaci]

Can not access OTRS anymore receiving Internal Server Error 500

This error started happening after I removed Authentication username and password from Sendmail.

Any ideas on how to resolve this issue?

[jojo]

check your apache error log

[jcamaci]

Here is part of my error log from C:\Program Files (x86)\OTRS\Apache\logs

I'm not sure what to look for.
[Wed Mar 06 13:28:25 2013] [error] [client 172.16.251.14] Invalid method in request CCM_POST /ccm_system/request HTTP/1.1
[Wed Mar 06 13:28:26 2013] [error] [client 172.16.251.40] Invalid method in request CCM_POST /ccm_system/request HTTP/1.1
[Wed Mar 06 13:28:32 2013] [error] [client 172.16.8.97] Invalid method in request CCM_POST /ccm_system/request HTTP/1.1
[Wed Mar 06 13:28:33 2013] [error] [client 172.16.8.139] Invalid method in request CCM_POST /ccm_system_windowsauth/request HTTP/1.1
[Wed Mar 06 13:28:34 2013] [error] [client 172.16.8.116] Invalid method in request CCM_POST /ccm_system/request HTTP/1.1
[Wed Mar 06 13:28:35 2013] [error] [client 172.16.251.11] Invalid method in request CCM_POST /ccm_system/request HTTP/1.1
[Wed Mar 06 13:28:35 2013] [error] [client 172.16.8.107] Invalid method in request CCM_POST /ccm_system/request HTTP/1.1
[Wed Mar 06 13:28:42 2013] [error] [client 172.16.1.190] Invalid method in request CCM_POST /ccm_system/request HTTP/1.1
[Wed Mar 06 13:28:43 2013] [error] [client 172.16.251.25] Invalid method in request CCM_POST /ccm_system/request HTTP/1.1
[Wed Mar 06 13:28:44 2013] [error] [client 172.16.251.29] Invalid method in request CCM_POST /ccm_system/request HTTP/1.1
[Wed Mar 06 13:28:45 2013] [error] [client 172.16.251.29] Invalid method in request CCM_POST /ccm_system/request HTTP/1.1
[Wed Mar 06 13:28:47 2013] [error] [client 172.16.1.51] Invalid method in request CCM_POST /ccm_system/request HTTP/1.1
[Wed Mar 06 13:28:47 2013] [error] [client 172.16.1.163] Invalid method in request CCM_POST /ccm_system/request HTTP/1.1
[Wed Mar 06 13:28:50 2013] [error] [client 172.16.251.31] Invalid method in request CCM_POST /ccm_system/request HTTP/1.1
[Wed Mar 06 13:28:51 2013] [error] [client 172.16.7.84] Invalid method in request CCM_POST /ccm_system/request HTTP/1.1
[Wed Mar 06 13:28:53 2013] [error] [client 172.16.1.222] Invalid method in request CCM_POST /ccm_system/request HTTP/1.1
[Wed Mar 06 13:28:56 2013] [error] [client 172.16.1.249] Invalid method in request CCM_POST /ccm_system/request HTTP/1.1
[Wed Mar 06 13:28:56 2013] [error] [client 172.16.1.193] Invalid method in request CCM_POST /ccm_system/request HTTP/1.1
[Wed Mar 06 13:28:56 2013] [error] [client 172.16.1.118] File does not exist: C:/Program Files (x86)/OTRS/Apache/htdocs/SMS_FSP
[Wed Mar 06 13:28:57 2013] [error] [client 172.16.1.151] Invalid method in request CCM_POST /ccm_system_windowsauth/request HTTP/1.1
[Wed Mar 06 13:29:00 2013] [error] [client 172.16.251.39] Invalid method in request CCM_POST /ccm_system/request HTTP/1.1
[Wed Mar 06 13:29:05 2013] [error] [client 172.16.1.176] Invalid method in request CCM_POST /ccm_system/request HTTP/1.1

[jojo]

there are loads of non OTRS requests in the log. so what else was changed

[jcamaci]

I just started setting OTRS up on Monday I was successful with fetching emails from a email address using IMAP, but I was unable to send emails. So I was trying to configure the send mail settings Framework::Core::Sendmail I was attempting to configure SMPT TLS. Which was not working correctly for me. I'm running Exchange 2010 and have a SMPT receptor set up for anonymous relay. I had tried setting up this configuration with a authenticating username and password however when I tried sending a email though OTRS I did not receive any errors in the logs, and the screen was just blank after hitting submit. So then I tried to configure send mail settings with no authenticating username and password after selecting the update button is when I starting receiving the Internal Server Error 500 message. So it must have something to do with having no authentication username and password within the send mail settings portion.