I'm getting the following error trying to send a mail with a couple of pictures attached.
My PHP file sizes are set to 20MB and the threads are posting successfully, but the mails aren't sending out. It's sending from an Exchange mailbox from my domain sending to mailboxes on the same domain. The domain is set to send and received 50MB emails. The raw attachments are about 13MB in size for this reply it is trying to send.
I just redacted my servername and domain name below. Now I'm trying to figure out if this is a limit hidden somewhere within OSTicket or PHP or Apache. Because I'm not finding the rejections on Exchange either for this support@ address.