Articles

• Modifying Attachment Filtering Rules

  Overview Attachment Filtering allows an administrator to set up rules to filter what types of email attachments to allow and block on the mail server. This article looks at how attachment filtering ru...

• Error: 'File <filename> was blocked because of an extension related to the detected file type <type>' When Sending Attachments

  Overview After reviewing the logs for the Attachment Filtering policies as per the article How to determine why the Attachment Filtering Content Filter blocked or allowed a message, you may find error...

• Why doesn't GFI MailEssentials try to clean a virus from an infected attachment, but quarantines or deletes the whole attachment instead?

  AnswerMost of the viruses that have been released recently did not attach themselves to other attachments but replaced the whole attachment. Therefore the whole attachment is the virus, and there woul...

• Mac Outlook emails with attachments are getting failed in MailEssentials

  Versions / Builds Affected2012/20120425-2158 StatusResolved Problem SummaryEmails sent that are compiled by Outlook for Mac are getting failed. TT / JIRAID174 How to IdentifyEmails sent that are compi...

• Inline attachments in outbound emails were not visible after being processed by MailEssentials

  Versions / Builds Affected20110812 StatusResolved Problem SummaryAttachments sent outbound through MailEssentials will not be visible if the attachment is pasted into the emails or if the emails inclu...

• Determining why Attachment Filtering blocked or allowed a message

  Overview Attachment Filtering is one of the Content Filtering plug-ins that enables administrators to block emails based on the types of email attachments that an email has. This plug-in scans inbound...

• Filtering an Attachment If Its Extension Is Changed

  Overview This article provides an answer to the query: Does GFI MailEssentials filter an attachment if its extension is changed?   Information The Attachment Filtering option of MailEssentials detects...

• Attachments are blocked because they are detected as a different file-type

  Versions / Builds Affected2012/2014 StatusResolved Problem SummaryThe MailEssentials Attachment Filtering blocks some emails with attachments because of a File category mismatch (Claimed extension xxx...

• Attachments are stripped or missing when disclaimers are enabled

  Answer PROBLEMWhen disclaimers are enabled, attachments are stripped (or missing) from the received email. ENVIRONMENT GFI MailEssentials all supported environments SOLUTIONRe-edit the disclaimer, so ...

• Attachment Filter exclusions ignored with multiple recipients

  Versions / Builds Affected2015 StatusOpen TT / JIRAID2919 How to Identify- Inbound email sent to 2 users (A and B) with attachment - Attachment Filter applies only to user A (B is excluded) - Email is...