I have exchange 2013 and my osTicket 1.9.12 is running on Ubuntu.If you have Email Fetching 'Enable' checked, and 'Fetch on Auto-cron' not checked, and 'Default Log Level set to DEBUG, then you should be seeing an entry titled 'Cron Job' in your osTicket system log every time the cron job fires.If it is not there, then you can be pretty confident the cron fetch is not running. As for the can't log into server message, I just wrote this in another thread, but I'll redo it here: Make sure that your chosen email account configuration works. First, verify the Default System Email
(found under Admin panel, Settings - Emails - Incoming Emails - Email
Settings - ) is actually the account that you have set up on your exchange server
to handle osTicket emails. (I didn't the first time I set it up)Then verify that that email account ( Your Tickets@**** account in Admin panel, Emails - Emails ) can actually fetch from your exchange server. You
could use Thunderbird running on on your Linux box to validate it.
Although I use Imap+SSL, in your case since you are using POP on
port 110, set up Thunderbird with the same account credentials and using
POP port 110 (it will want to default to IMAP and the SSL port, but
you can use manual config to override it) If Thunderbird doesn't work, then the issue is probably your exchange server configuration.