Prověření smtp serveru zvenku - pomocí Abuse.net

Přes http://www.abuse.net/relay.html se dá trochu ověřit, jestli je smtp server open relay. Registraci jsem provedl na adresu servis v(e) uvt.cz. Služba na abuse.net zkusí různým způsobem poslat email na danou adresu přes server, který je jeho MX a na základě těchto testů dá určitý report.

Musíte zadat doménu, kterou chcete otestovat, registrační email (servis@uvt.cz), registrační heslo (aoaezcm) a kliknete na Test for relay

Stručný popis funkce
To send a complaint via abuse net, determine the domain to whom it
should go, and send it to that domain's name followed by @abuse.net.
For example, if you want to send a message to example.com, the address
would be example.com v(e) abuse.net.

Any messages you've previously sent have NOT been forwarded anywhere;
you'll have to resend them if you want them delivered. (The reason
for that is pragmatic — most mail from unregistered addresses is
either spam or is from forged addresses that will never register.)

Visit our web site at http://www.abuse.net for news about abuse.net,
and visit http://spam.abuse.net for more info about abusive e-mail and
what to do about it.

Kompletní popis
Welcome to the abuse.net message forwarding system. Although this
service is provided without charge to the Internet community (with the
exceptions detailed below) you have to register once before you can
use it. Registration is very easy, but please read the instructions
before you try to do it. We regret that we have to make all of our
users go through the registration process, but it's the only way we
know to discourage miscreants from sending spam through the abuse.net
forwarder. (It took about three days for them to discover the
previous version that didn't have registration.)

HOW DOES ABUSE.NET WORK ?

Once you've registered, when you send a message to an address at
abuse.net, the system here automatically re-mails your message to the
best reporting address(es) we know for the domain you want to send to.
If, say, you wanted to send mail to example.com, the address would be
example.com v(e) abuse.net.

It's up to you to figure out what the appropriate domain is. See
http://spam.abuse.net/userhelp/ for some links to mail analysis
advice.

For many domains the contact address is postmaster@<domain>, for some
it's abuse@<domain>, for some it's something else. Some particularly
unpleasant domains ignore all their mail; when we're aware of that we
use the address for their next-level-up provider.

We have a database with contact information for several thousand
domains, but when we don't know anything about the domain, we mail to
postmaster at that domain and all suffixes of that domain, so if you
sent mail to a.b.com v(e) abuse.net, we'd re-mail that to
postmaster v(e) a.b.com and postmaster v(e) b.com.

Not being omniscient, we don't know about every domain on the net.
Our current list is on the web site at http://www.abuse.net. If you
know of a reporting address not on our list, please tell us about it
at update v(e) abuse.net.