> Source: [sk166322](https://support.checkpoint.com/results/sk/sk166322)

# sk166322 - "Bounced" log status for emails in BCC mode

| Property | Value |
|----------|-------|
| Solution ID | sk166322 |
| Date Created | 2020-04-20 |
| Last Modified | 2020-04-21 |
| Technical Level | Advanced |
| Products | Email Security |
| Versions | Cloud |
| OS | Gaia |

## Symptoms

- "Bounced" log status for emails in BCC mode.

<br />

## Cause

When a Security Gateway / SandBlast is configured as MTA in BCC mode, it will not forward e-mails to the mail server.  

When a Next Hop IPv4 address 0.0.0.0 is configured, a log with a "Delivered" status is expected.  

A different status might indicate a problem in the configuration.  

A "Bounced" status appears when the following is seen in a maillog:  

![An example of the bounced e-mail](https://sc1.checkpoint.com/sc/SolutionsStatics/NEW_SK_NOID1586787941617/Bounced20200413173204.jpg)  
**Example** :  

# grep -i \<ID of the e-mail from the log\> maillog\*  
.  
.  
.  
maillog: Sandblast postfix/smtp\[13111\]: 4917Q222H5zSRSd: to=\<example@bcc.cp\>, relay=0.0.0.0\[0.0.0.0\]:25, delay=0.05, delays=0.05/0/0/0, dsn=5.4.6, status=bounced (mail for \[0.0.0.0\] loops back to myself)  
.  
.  
.

<br />

## Solution

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