On 2016-02-08, Mark Goodge wrote:
> On 08/02/2016 15:38, Ian Eiloart wrote:
>>
>>> On 5 Feb 2016, at 09:21, Adam Funk <a24061@???> wrote:
>>>
>>> Just curious: why are 100% of Postfix servers "Version Other"?
>>
>> The survey never proceeds beyond the "EHLO" greeting. That’s a shame,
>> because it means that about 50% of servers aren’t identified, whereas
>> some servers will give away their version number with a HELP, or
>> something like that. Anyway, some servers display the software name
>> at EHLO. And some of them also display the version number. Security
>> consultants don’t like that, so the display of software name or
>> version is often disabled. Not that it helps much, if at all.
>>
>> So, perhaps Postfix never displays a version number.
>
> Postfix doesn't display a version number by default, on the basis that
> this information is of no relevance to a remote host trying to deliver
> email to it. It can be configured to display a version number, but I
> can't imagine why anybody would want to.
That explains it, thanks. I haven't used Postfix, so I didn't know
that, but the statistics did look odd that way.
