Spam Checking: Difference between revisions

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*Rspamd.

Both of these will assign a 'spam score' to the message. We will then use the ~~highest~~ score to classify a message as spam or not.

Both of these will assign a 'spam score' to the message. We will then use the higher score to classify a message as spam or not.

===Spam score options===

Once a message has been processed by the spam engines the message will then be subject to one of three options:

* Non-spam - accept

* Medium-scoring Spam - accept, but marked with ***SPAM <score>*** to the subject, and saved to the spam folder

* Medium-scoring Spam - accept, but marked with ****SPAM:<score>**** to the subject, and saved to the spam folder (unless the mailbox is using Sieve filtering)

* High=scoring spam - rejected

* High=scoring spam - rejected if possible, otherwise handled as per medium-scoring Spam

The score at which a messages is marked as spam or rejected can be set on the Control Pages on a per-Mailbox or per-Domain basis. The default score to mark as spam is 5, and to reject is 20.

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==Headers==

We add various extra headers to email regarding the Spamassassin and Rspamd scores and reports.

Here are some examples:

{| class="wikitable"

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| 2.1

|-

| X-Spam-Rspamd-Score

| X-AA-Spam-Rspamd-Score

| The spam score from Rspamd

| 2.1

|-

| X-Spamassassin-Score

| X-AA-Spamassassin-Score

| The spam score from Spamassassin

| 2.0

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| Which spam checking engine we used to classify this message

| Rspamd or Spamassassin

| -

|-

| X-Spam-Score-Int

| The spam score as an integer

| The spam score multiplied by ten, as an integer value

| 21

|-

| X-Spam-Bar

| The spam score represented by +'s. One for each point~~<br~~ />

| The spam score represented by +'s. One for each point. Negative scores represented by -'s. Very small scores by /.

| ++

|-

| X-Spam-Flag

| Whether the message is classed as spam or not

| YES or NO

|-

| X-Spam-Report