We have this issue happen pretty frequently and have been unable to find a resolution so far.Whenever our helpdesk account receives an NDR (usually the result of someone mistyping an email address) it sends an email to our admin account saying, "Excessive errors processing emails for mail.domain.com/help@domain.com. Please manually check the inbox," each time the fetch task runs. It also blocks any subsequent messages from being fetched and brings our helpdesk to a screeching halt. At present our only solution is to log into the email account to delete the NDR and then mail fetching resumes as normal. osTicket v1.9.11 (c1b5a33)Microsoft-IIS/8.5MySQL 5.6.19PHP 5.5.14about 8,000 total ticketsThe email account is being fetched via pop and outbound messages are sent via our smtp server. It's same server for both as we run our own mta (SmarterMail)Fetching is done via a scheduled task to run cron.php. I'd love for osticket to be able to either process the NDR or just disregard/delete it but I'm not sure how to make this happen. I've looking into doing this from the email account but we don't really have a way to block all NDRs to this address.Any ideas?Thanks in advance,Case