| Built-in Virus Scanning |
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| Multiple Spam Detection techniques |
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| Authorized Sender Filtering & Challenge Response |
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| Content Filtering |
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| DNSBL/RBL Spam Detection (Spam Databases) |
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| White listing of Email Addresses & Domain Names |
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| Black listing of Email Addresses & Domain Names |
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| Subject Filtering |
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| Attachment Filtering |
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| Custom Mail Filtering Rules |
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