> Source: [sk138792](https://support.checkpoint.com/results/sk/sk138792)

# sk138792 - "451 Temporary scan failure"  error message when emails stuck in postfix queue

| Property | Value |
|----------|-------|
| Solution ID | sk138792 |
| Date Created | 2018-10-24 |
| Last Modified | 2019-03-03 |
| Technical Level | Advanced |
| Products | Security Gateway, Email Security |
| Versions | R82.10, R82, R81.20, Cloud |
| OS | Gaia |

## Symptoms

- * Emails are stuck in postfix queue with reason *"(host 127.0.0.1\[127.0.0.1\] said: 451 Temporary scan failure. Email Session ID: {XXXXXXXX-X-XXXXXXX-XXXX} (in reply to end of DATA command))"*
* Enabling *in.emaild.mta* debug shows the error *"send ended with error: SSL certificate problem: unable to get local issuer certificate "* in $FWDIR/log/mtad.elg

## Cause

The file /opt/CPshrd-R80.20/conf/ca-bundle.crt is not updated and consequently the SSL handshake with https://rep.checkpoint.com is broken.

## Solution

This solution requires authentication. Please log in to view the full solution.

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