On 16 Mar 2015, at 6:30, Eliezer Croitoru wrote:

While running my mail server I noticed that couple mail servers on the path identify themselves as "HyperSendmail v2007.08"(mta??).

Anyone heard about such a software? What is this software?

It's obviously not Postfix, so this is probably not the best place to find out about it. :)

In a corpus of ~5GB of mixed spam/ham messages from the past 10 years across a half dozen email accounts I see 'HyperSendmail' in the Received headers of exactly ONE message: yours. My guess: a proprietary MTA of 012.net.il. Maybe you should ask the people who are passing *YOUR* mail through it?

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