Hello I have a mail server where I use TPS FC4 with ISPConfig. The system is stable and works great. But I seem to have some trouble with sending large e-mails. I have set message size in postfix main.conf to 81920000. Restarted postfix, and run "postconf | grep size" witch returns: Code: berkeley_db_create_buffer_size = 16777216 berkeley_db_read_buffer_size = 131072 body_checks_size_limit = 51200 bounce_size_limit = 50000 header_size_limit = 102400 mailbox_size_limit = 51200000 message_size_limit = 81920000 But I still can`t seem to be able to send larger e-mails than around 40MB. And is the message size limit in postfix also the limit for incoming mail. What about sending/receiving time-out, any point in changing this, and where to do it?