We use postfix as a mail queue / sending service in one of our applications. This application generates emails with PDF attachments. Some of the emails with PDFs get sent fine, but others seem to cause a "timeout after DATA" error.
Through reading online, I've seen answers such as adjusting the MTU size on the network interface, etc. None of these solutions have worked. Has anyone had this happen, do you have any suggestions to fix it? Thank you.
