Maximum number of recipients allowed in email If this field is empty, the message is marked as spam.Ĭheck if the email header contains a malformed MIME FROM: field.Ĭhecks if the MIME from field is a correct notation as defined in the RFCs. The below table outlines the different checks that can be configured and enabled in this filter to identify spam:Ĭheck if the email header contains an empty MIME FROM: field.Ĭhecks if the sender has identified himself in the From: field. The Header Checking Anti-Spam filter can be configured to make several different checks on an email, mostly related to the email’s headers. It can also be configured to detect particular groups of inconsistencies in MIME/SMTP header values. The order in which the various modules scan an email is configurable and can be altered from the MailEssentials Configuration > Anti-Spam > Filter Priority. This filter is part of the Anti-Spam Engine (ASE) chain as shown in the illustration. The Header Checking filter analyses the email header to identify spam emails. This article describes how this filter analyzes email headers to identify spam emails. This filter allows an administrator to specify which checks should be perform on email headers. The Header Checking filter is one of the plugins that are part of the Anti-Spam Engine (ASE) scanning chain.
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