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Currenty emails are sent/received as :

Received: from localhost.localdomain ( [xx.xx.xx.xx])
    by (Postfix) with ESMTP id 7F6CC67897
    for <>; Thu, 19 Jan 2012 23:31:12 +0100 (CET)

I would like to send emails without sender location (first line) :

Received: by (Postfix) with ESMTP id 7F6CC67897
    for <>; Thu, 19 Jan 2012 23:31:12 +0100 (CET)

I know I can do that with header_check, but this is regular expression, and performance will suffer...

Is there and postix setup variable for this? Just to ignore sender location.

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up vote 0 down vote accepted

That is not a valid Received: line - the source must be present.

You could use header_checks to replace the internal information with a static text, but the Received: line should remain standards-compliant.

Why do you want to do this ?

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I want to change that, because i don't want to tell who the sender is, and it is ugly (Received: from localhost.localdomain)... I don't want to use header_checks because it is performance impact. – glavić Jan 20 '12 at 13:18
You can't "not tell who the sender is" - email is validated on both ends. Why do you think header-checks will impact performance ? What kind of volume do you have ? – adaptr Jan 20 '12 at 13:19
Why is sender not SMTP server who sends emails (2 part), and not my local computer (1 part). Header_checks impacts performance because it uses regular expression on every mail. Volume is 120k+ daily – glavić Jan 20 '12 at 14:58
If this isn't possible like i wanted or. even recomended, they can you tell me to set host "localhost.localdomain" ? Tnx – glavić Jan 20 '12 at 17:26
You won't see any impact from using regexes in header_checks with such a volume - that's less than 100 messages per minute. – adaptr Jan 20 '12 at 17:46

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