Overview.
The EnServe can examine all incoming e-mail and decide whether or not it is spam (junk e-mail). It can then delete, deliver or redirect e-mail it thinks is spam keeping peoples' mailboxes relatively junk-free.
General Options.
The filter rule determines how strict the EnServe is in marking things as spam. Too strict and genuine messages may be identified as spam, too lax and a lot of spam may get through unidentified. The standard setting should be the best setting for most situations.The admin options allow you to set the level:
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Required_hits controls the level that is tagged as spam and
what is not. The default setting of 5 is a good starting place. If you find a lot of spam is creeping in with a score of say 4.5 you can reduce the required hits. In-House we are running at a setting of 3.5.
Whitelist and Blacklist.
You can instruct the EnServe to either never (whitelist) or always (blacklist) identify e-mail from specific e-mail addresses.If you add an e-mail address to the whitelist e-mail from a matching address will never be marked as spam. If you add an address to the blacklist e-mail from a matching address.
For whitelist, prefix the address with whitelist_from and for black listing prefix it with blacklist_from. You enter one option per line and can have has many entries as required. e.g.
whitelist_from *@ebay.co.uk whitelist_from *@redhouse.co.uk whitelist_from BFC_Offer@bmail.bca.co.uk whitelist_from *@homebasenews.co.uk whitelist_from *@xmr3.com whitelist_from *@pd.fwdto.com whitelist_from *@thebookpeople.co.uk whitelist_from *@rsgb.org.uk whitelist_from *@morethan.com whitelist_from *list.sco.com whitelist_from *@homeshoppingdirect2.com
You can enter a full e-mail address, ie. user@host.domain.tld or use asterisk wildcards..
The line *@host.domain.tld for example, would match any address ending in @host.domain.tld while *.gov.uk would match any address ending with .gov.uk.
Spam and BlackLists
There is no real point in adding lots of blacklist entries to your Anti_Spam configuration. Letting the Spam software handle it is very resource greedy and also by the time the Spam software starts to process it it the message has allready arrived on the system. You are better off getting the system to reject the mail at an early stage.People sending spam will use a different mail address each time, so yes you can add it as a blacklist entry but the chances are it will never be used ever again (we had 15000+ on a block list and only 2 have ever re-appeared - internally we have stoped using it.
However, there are occasions where you want to block a sender for other reasons than spam.
Use the admin menu
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Any users in the 'Spammer' list will be rejected as soon as the mail hits the system BEFORE it is accepted.