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FREQUENTLY ASKED QUESTIONS
How does my clean email get back to me?
The Internet knows where to send email by looking up DNS MX (mail exchanger) records.
Your DNS MX entries would contain the IP addresses of our servers. (We set you up on a
primary, and secondary server.) The sender's server looks up the DNS MX record and
connects to the corresponding IP address, then sends the email. Our servers receive each
email, then scrub each one, checking for viruses, then we do a database lookup in our records
for your email server's IP address, then we relay each email to your server. This all sounds like
a lot, but it happens in under a second.
Spammers are smart people. So additionally, for extensive security reasons, we suggest closing the
SMTP port, the port email typically travels through, from anyone else but our servers. This
guarantees that nobody else is able to bypass the virus/spam filtering by hitting your ip
address directly.
How does it work?
Spam Filtering works by scanning each incoming email and scoring its results. If the email
scores too high, it will automatically be quarantined.
Is there a delay?
Yes, but it is less than one second.
What happens if our email server goes down?
Our servers hold all of your email until your server comes back online. All of your email is then
forwarded to you.
How did spammers get my email address?
One of the many ways spammers may have obtained your contact information is by using "spider-bots"
that comb websites looking for email addresses. By simply putting your email address on your
own website for contact purposes, you make it susceptible to harvesting. When this happens, you'll
begin receiving spam.
To stop this particular spamming method, all you need to do is put your email addresses inside a
script that the "spider-bots" can't read, like this one:
<script language=javascript>
<!--
var username = "username";
var hostname = "yourdomain.com";
var linktext = username + "@" + hostname;
document.write("<a href=" + "mail" + "to:" + username +<
"@" + hostname + ">" + linktext + "</a>")
//-->
</script>
Your email address still shows up on your website the same as it did before, but now
it's invisible to the "spider-bots" spammers use to gather email addresses.
Why is spam called spam?
Spam gets its name from a television comedy sketch by the British comedy troupe Monty Python. In
the sketch, a restaurant serves SPAM® (the canned meat) with any order placed. Customers could
order Spam, Spam with a side of Spam, and so on. As the skit unfolds, an annoyingly funny waitress
repeats the name "Spam" over and over again.
From that comedy sketch, spam took on a whole new meaning, one that now referred to piles and piles of
something you didn't really want in the first place but was served to you anyway.
SPAM, when referring to the brand name canned meat by Hormel®, stands for "spiced ham" and is
in all capital letters. When referring to unsolicited email messages flooding the Internet,
spam is written in all lower case letters.
What is Vipul's Razor?
Vipul's Razor is a distributed, collaborative, spam detection and filtering network. Through user
contribution, Razor establishes a distributed and constantly updating catalogue of spam in propagation
that is consulted by email clients to filter out known spam. Detection is done with statistical and
randomized signatures that efficiently spot mutating spam content. User input is validated through
reputation assignments based on consensus on report and revoke assertions which in turn is used for
computing confidence values associated with individual signatures.
What kind of RBL's do you use?
Here is a list of RBL's we use.
sbl.spamhaus.org
unconfirmed.dsbl.org
relays.mail-abuse.org
list.dsbl.org
relays.visi.com
query.bondedsender.org
relays.ordb.org
blackholes.mail-abuse.org
multihop.dsbl.org
ipwhois.rfc-ignorant.org
dialups.mail-abuse.org
bl.spamcop.net
cbl.abuseat.org
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