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DNS resolution failure messages in the mail server log

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Article ID: 162672

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Updated On:

Products

Messaging Gateway

Issue/Introduction

Following the update to Messaging Gateway (SMG) 10.6, a large number of DNS resolution failure messages appear in the maillog file.

2015 Dec  2 12:03:39 PST (notice) ecelerity: [30987] DNS resolution failure 7c1767b30512b6003fd3c2e618a86522.smg.ultra.brightmail.com: 4

Cause

The DNS queries performed by the "ultra" URL filtering generates a NOTICE level message when the hostname queried does not exist in the DNS or the DNS query times out.

Resolution