> Source: [sk115258](https://support.checkpoint.com/results/sk/sk115258)

# sk115258 - Site to Site tunnel with 3rd party fails after successful Main mode and Quick mode

| Property | Value |
|----------|-------|
| Solution ID | sk115258 |
| Date Created | 2017-01-15 |
| Last Modified | 2021-10-22 |
| Technical Level | Advanced |

## Symptoms

- * Site to Site tunnel with 3rd party fails after successful Main mode and Quick mode.
* After phase 2, the Check Point Security Gateway will either receive or send a "delete SA" after Phase 2, depending on which peer initiated the negotiations.

## Cause

Incorrect Encryption domain configuration on the interoperable device.

## Solution

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