docs: skad bierze sie login, na stronach ktore podaja host - #270

…he hostname

A business gap rather than a technical one, and it was on the pages carrying
the traffic.

WINDOWS-SERVER, SYSTEM-MTA, APPS, MONITORING and LINUX print `mx.msgwing.com`
and `your-username@msgwing.com` between eleven and seventeen times each, as
values to paste into a config file, and never say that the username comes from
an account. Somebody reads the hostname as a public endpoint, pastes it, and is
refused. Those five pages carry roughly 265 of the impressions this site gets.

PRINTERS, at 335 impressions, already says it - "register a free account at
msgwing.com and activate it" - which is how the gap was visible at all.
TROUBLESHOOTING says it in the form its own context needs, pointing at where
the password came from rather than at signup. Neither was touched.

The block states both limits in the same breath as the offer: mail leaves from
a generated address rather than the reader's own domain, and 200 a day with no
paid tier. Saying that here rather than after somebody has configured a printer
is the difference between a limit and a surprise, and the alternatives page is
linked in the same sentence for the cases it rules out.

Correcting my own measurement while I am at it. The first pass searched for
"Get a free account" and reported that twenty of twenty-three pages had no call
to action, PRINTERS included. That was the search pattern, not the site - the
pages phrase it as prose. The gap is real but it is five pages, not twenty.