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Symantec IPs are blacklisted on SORBS

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Article ID: 175401

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Updated On:

Products

Email Security.cloud

Issue/Introduction

One of the IP addresses for  Symantec email delivery servers has been blacklisted by SORBS which is a public block list employed by the intended recipient of the email.

An error can be seen in Track and Trace log.

Error: 554 5.7.1 Service unavailable; Client host [XX.XX.XX.XX]

blocked using dnsbl.sorbs.net; Currently Sending Spam See:

http://www.sorbs.net/lookup.shtml?XX.XX.XX.XX

Note: XX.XX.XX.XX is one of the IP addresses of Symantec email delivery servers.

Cause

The error indicates that Email Security.cloud attempted to deliver the message to the intended recipient’s server, but the message was rejected by the server, due to the email block list of SORBS. IP addresses for Symantec.cloud may occassionally get blacklisted due to users who abuse the service by sending spam, or from compromised servers relaying spam through the Symantec.cloud email infrastructure.

 

Resolution

Symantec proactively monitors email block lists and raises a removal request to SORBS in real time, so delivery problems associated with this error is usually temporary.
So it is not necessary to log a support case for requesting a removal to Symantec. Please contact the sender to resend the mail when you noticed the error mentioned above.