Are there confidentiality concerns with having our email go through an external filtering source?
LastSpam does not store any legitimate email. Legitimate email only passes through our filter, and is present only long enough to be scanned (a second or two at the longest). Our infrastructure is protected with a sophisticated, multi-tiered security program. From the perspective of someone trying to “sniff” Internet email traffic, you won’t be any less secure than you are presently.
http://www.lastspam.com/en/conf01.php Please click that url
It is a common occurrence that, when offered the LastSpam service, prospective clients express concern over email confidentiality.
If this is a concern to you, then
consider this…
When organizations install a product locally on their network, whether it be a software or hardware-based solution, it gives them only the illusion of confidentiality. It is important to point out that your organisation's emails routinely circulate in “ clear text ” over the Internet and that the only way to make emails truly confidential is to use one of the different encryption methods currently available (PKI, X509, PGP, etc.).
Having emails transit through LastSpam's closed infrastructure does not make organizations any more or any less vulnerable in terms of confidentiality, this for two key reasons:
Valid emails only go through our servers for a few milliseconds and are not kept in our systems;
Operational security measures and audits prevent anyone other than the Client from accessing spam interception logs and data.
LastSpam Support