DN Singh: > The problem is that I am unable to find any hard limit of acceptance of > mails to these destinations. I have even tried creating slow transports for > them, but they still seem to drop connections after DATA command or RCPT > command. > > "lost connection with mx.rediffmail.rediff.akadns.net[119.252.147.10] while > sending DATA command)" > > This happens suddenly after some mails get delivered, and after it happens, > most of the mails in my active queue get transferred to deferred queue. > This increases the backlog of mails.
Their limit is (surprise!) the point after which they begin dropping your connections. Wietse