lscarne...@veltrac.com.br writes: > My script is very simple (as you will see below), but by some reason, > my machines behind the firewall can't send large emails, or emails > with attached files.
You don't offer any details of the other parts of the mail handling setup, but my first suspect would be content filtering of some kind kicks in noticeably only when there's attachments to be dechiphered. My other suspect is that > match in all scrub (no-df) somehow tickles the receiving end the wrong way. Others have reported to me privately that going from 4.4 and scrub in all to 4.6 and match in all scrub (reassemble tcp) worked OK on most traffic, but slowed down some https traffic horribly. Then some apparently random experimentation lead to trying different max-mss values and with match in all scrub (no-df max-mss 1440) the problem went away. tcpdump output of successful and failing connetions would be instructive, along with the actual error messages, if any. - P -- Peter N. M. Hansteen, member of the first RFC 1149 implementation team http://bsdly.blogspot.com/ http://www.bsdly.net/ http://www.nuug.no/ "Remember to set the evil bit on all malicious network traffic" delilah spamd[29949]: 85.152.224.147: disconnected after 42673 seconds.
