Spam Filter - Overview
The Domaintechnik.com Spam Filter consists of three filter stages and allows an absolutely reliable filtering of unwanted messages without the otherwise usual risk to lose required messages by mistake.
In the Control Panel the Spam Filter is a component of the Email Manager and can there be configured for each mailbox individually. You can find the Spam Filter after clicking on the mailbox to be configured under the link Anti Spam Configuration.
Even without access to the Control Panel the Spam Filter can be reached by a mailbox user via the Webmail login. Therefor you have to click on the link Mailbox Manager and then configure the link Anti Spam Configuration.
Spam Filter - Summary of Features
First Filter Stage
At this stage a procedurecalled "Greylisting"is applied, which is a mixture between Whitelistingand Blacklisting. The sending mail server according to the emailprotocol is requested to send the message again., whereby most spammass email programs fail and abort sending.
Since this is a very strict expulsion process we have strongly untightened some rules contrary to other providers. Therefore we are able to guarantee maximum compatibility to badly configured posting email servers, so that in no case any messages, desired by you, are lost.
Second Filter Stage
As second filter stage we rely on our self-development, the duplicate filter, which automatically deletes all double messages in case that sender, receiver and content of the messages are identical. Particularly virus caused messages and multiple, unintentional error messages are suppressed by this procedure.
Third Filter Stage
The third filter stage is that range of our Spam Filter System, which can be configured in the Domaintechnik Control Panel quite free. There are several filter categories and if required own Whitelists and/or Blacklists can be added.
Advantages of the 3 Stages System
By means of simultaneous application of three fundamental different systems with a very small threshold for filtering we reach a very high, since diversified success rate.
Additional however we can be sure, that our customers do not lose any messages, since every single filter only filters messages obvious for it and thus the error ratio heads towards zero.
Spam Filter - Configuration Options
Activating Anti SPAM Filter for this Mailbox
Through a click on Yes the filter is being activated corresponding to the subsequent rules, as soon as the settings are stored. If the filter is being deactivated with a click on No all chosen settings have to be done once again!
Emails Which Are Spam with Very High Probability
By means of this option messages which, based on internal rules, contain a lot of indications of being unsolicited, can be treated as follows:
delete immediately
Thus all messages of this category are deleted immediately automatically and without any notification.
forward to
The message is forwarded to a specified email address. Later on it can be checked whether the filtering was accurate or if the settings have to be adapted. You can select any destination email address (internally for the same domain or externally).
save in the mailbox
The message is not deleted, but as so far stored in the mailbox. In the message headlines an appropriate hint, that it is identified as spam, is built in.
Emails Which Are Spam with High Propability
Messages classified here do contain less indicators than those of the above mentioned category, but still enough to be sufficiently sure marked as spam. Also for this category the following options are possible:
delete immediately
Thus all messages ot this category are deleted immediately automatically and without any notification.
forward to
The message is forwarded to a specified email address. Later on itcan be checked whether the filtering was accurate or if the settingshave to be adapted. You can select any destination email address(internally for the same domain or externally).
save in the mailbox
The message is not deleted, but as so far stored in the mailbox. In themessage headlines an appropriate hint, that it is identified as spam,is built in.
Emails Which are Probably No Spam
Messages classified in this category do not have any or not enough indicators of being spam, so that it probably are regular, desired messages. Also for this category several options are possible as mentioned below:
forward to
The message is forwarded to a specified email address. You can select any destination email address (internally for the same domain or externally).
save in the mailbox
The message is saved normally in the mailbox.
Reliable Senders (Whitelist)
Into this text field you can enter sender email addresses, that are not to be filtered even if several indicators would report the content as spam. This is helpful, if e.g. newsletters are banned by the Spam Filter.
enter sender email addresses
Only one email address per line can be entered. Additionally you can use * as wildcard in order to set up a more general rule, e.g. *@domaintechnik.at accept all senders of domaintechnik.at or office@firm.* accepts messages from this address whether it has .at, .de, .com or any other ending.
Blocked Senders (Blacklist)
Into this text field you can enter sender email addresses, that are to be filtered, whether the message is identified as spam or not. This allows e.g. automatic banning of freemail services and/or suspect offerers.
entry sender email addresses
The addresses can be entered as mentioned above for the whitelist. The use of * as wildcard is also possible, but should be used with maximum caution in order to prevent from unintentional loss of messages.
Spam Filter - Screenshot
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