|
|
|
|
|
|
|
|
Applies To: Model 500
The ePrism 500 is simple to setup, yet sophisticated. This table summarizes the Anti-SPAM & Anti-Virus features of the ePrism 500, with links to more detail if you are interested.
These are all configured from just two locations:
Appliance Manager > System Settings > Advanced
Appliance Manager > Mail Administration and Reports > Administration
|
Feature |
Who |
Default |
In a Nutshell |
|
DNSBL |
Admin |
Off |
Uses Internet maintained DNS global blacklists of identified spammers to reject email. As administrator, you identify the DNSBL servers you wish to use. More |
|
SPF |
Admin |
On |
An authentication extension to SMTP that checks SPF records on Internet maintained DNS servers in order to verify that the sending IP address is from an approved email server for that domain. The Spam score is adjusted based on the results of this check. More |
|
DCC |
Admin |
Off |
Uses Internet maintained DCC servers to identify potential bulk email, based on email checksums and their frequency of occurence. The Spam score is adjusted based on the results of this check. More |
|
Global BlackList/WhiteList (5.1) |
Admin |
On |
Administrator maintained (on ePrism) global lists of domains/email addresses to reject (blacklisting) or allow (whitelisting). Global entries override Per-User entries. More |
|
Whitelisted Recipients (5.1) |
Admin |
Off |
Administrator maintained (on ePrism) global list of internal email recipients for whom SPAM checking is turned off (Virus checking is NOT turned off however). Effectively, these are "trusted" users. More |
|
User BlackList/WhiteList |
Users |
On |
Per-user lists of domains/email addresses to reject (blacklisting) or allow (whitelisting), maintained on ePrism. More |
|
GreyListing |
Admin |
Off |
Stops one-time or randomly sent SPAM (dictionary attacks) by postponing acceptance of the initial email and forcing the email to be re-sent a second time, which a legitimate email server will usually do, but a spammer will not normally do. Built in to ePrism. More |
|
Attachment Controls |
Admin |
On |
Quarantines (for Admin review) email with designated attachments. Admin may reject quarantined items that don't look valid or important at their discretion. List of filename extensions to HOLD or REJECT kept on ePrism. By default, 57 extentions (mostly for executable file extension types) are installed as items to HOLD. Admin may add or delete extensions at will. More |
|
Kaspersky Anti-Virus |
Admin |
On |
Scans inbound and outbound emails for Viruses. Only clean email is delivered. Viral email is rejected. Signatures updated automatically & hourly on ePrism. More |
|
The eGuard Database |
Embedded |
On Always |
A sophisticated database (updated 7x24x365) of Anti-SPAM signatures (similar to Anti-Virus signatures) used to check for known spammers and spamming methods. Spammer methods for circumventing SPAM filtering are also detected. More |
|
Hueristics |
Embedded |
On Always |
The Hueristics engine applies heuristic content examination and scoring which may result in an email rejection, or subject line tagging with the tag string "[SPAM]". Tag and Rejection thresholds are configurable, as is the tag string. More |
|
Auto-Whitelisting |
Admin |
On with Outbound |
Every feature in this table can potentially reject email, except this one, which is simply an automated way to add legitimate email addresses to the users whitelist. More |
