On 2010-08-22 Jose Ildefonso Camargo Tolosa wrote:
> I got a curiosity, I have noted that the Date header the mail takes
> comes from the client computer, so, if my computer have a wrong date,
> my mail will go out with a wrong date too.
> I know the server will put its own timestamp when it process the
> message, but the destination mail client will use the Date header to
> order messages, and thus, if someone's computer has a date of now-3
> days, there is a risk that the mail he/she sends is overseen by the
> receiver.
> I also know that there should be a policy to keep all of the company's
> PCs clock synchronized to a central server: but that's not the case,
> and there are a few PCs with failing BIOS batteries (which shouldn't
> happen).

NTP should take care of both issues.

> I have to ask: is there a way of making postfix rewrite Date header to
> server's time for authenticated mail? (or at list for a range of IPs),
> off course, a general header rewrite would not be good, because that
> would overwrite header for mail coming from the Internet (that would
> be really bad).  I took a quick look at the docs, and found nothing on
> this matter, nevertheless, if someone can point me to a doc where this
> is explained, that will be enough for me.
> What do you think on this?

Fix the problem rather than the symptom.

Ansgar Wiechers
"Abstractions save us time working, but they don't save us time learning."
--Joel Spolsky

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