Am 30.08.2013 19:36, schrieb Terry Gilsenan: > The killer on high latency links is the tcp-window and the continual wait for > ack. With links above 1000ms this compounded delay reduces the available > bandwidth to a very small percentage of the interface speed (eg:256kbps on a > 2mbps link). Without this I have seen UDP data streams that will approach the > actual interface speed. (eg: 1.8mbps on a 2mbps link)
That may be true. But SMTP is an non-interactive, non-realtime application that does not need high bandwidth. Keep the servers talking to each other until the email is reliably transferred over TCP. Regards -- Robert Sander Heinlein Support GmbH Schwedter Str. 8/9b, 10119 Berlin http://www.heinlein-support.de Tel: 030 / 405051-43 Fax: 030 / 405051-19 Zwangsangaben lt. §35a GmbHG: HRB 93818 B / Amtsgericht Berlin-Charlottenburg, Geschäftsführer: Peer Heinlein -- Sitz: Berlin
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