> Source: [sk105482](https://support.checkpoint.com/results/sk/sk105482)

# sk105482 - Spam e-mails pass through the Security Gateway R75 - R77 although Anti-Spam blade is enabled

| Property | Value |
|----------|-------|
| Solution ID | sk105482 |
| Date Created | 2015-04-06 |
| Last Modified | 2016-12-12 |
| Technical Level | General |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |
| OS | Gaia |

## Symptoms

- Some spam e-mails pass through the Security Gateway R75 - R77 even when the Anti-Spam blade is enabled.

## Cause

In versions R77 and lower:

1. MTA is not supported on Anti-Spam blade.
2. Anti-Spam blade does not support any kind of e-mail encryption (STARTTLS, SSL/TLS).

## Solution

Starting in [R77.10](http://supportcontent.checkpoint.com/solutions?id=sk97617), the Mail Transfer Agent (MTA) feature for Anti-Spam blade was added - Check Point Security Gateway takes the role of the Exchange Server, and, therefore, is able to decrypt the encrypted e-mails.

Check Point recommends to always upgrade to the most recent version ([upgrade Security Gateway](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doShowproductpage&productTab=downloads&product=73) / [upgrade VSX](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doShowproductpage&productTab=downloads&product=359) / [upgrade Security Management Server](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doShowproductpage&productTab=downloads&product=184) / [upgrade Multi-Domain Security Management Server](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doShowproductpage&productTab=downloads&product=166)).

**Related solutions:**

* [sk104473 - Anti-Spam does not block e-mails sent to global public domains such as Yahoo, Gmail, etc.](http://supportcontent.checkpoint.com/solutions?id=sk104473)
* [sk108553 - Mail Transfer Agent (MTA) - FAQ](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk108553)
* [sk109699 - ATRG: Mail Transfer Agent (MTA)](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk109699)

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