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554 You are not allowed to connect

Updated: 01 Aug 2010 | 6 comments
enzo81's picture
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This issue has been solved. See solution.

A sender from a particular domain tried to send an email to me but recieved a bounce with the following message:

Failure welcome message from "brightmail public ip address", 554 You are not allowed to connect.

I do not have any 3rd party bad sender lists, finding sender group turns up negative, IP reputation is clean.

They used to be able to send emails to me until last Friday.

All other domain emails are coming in fine.

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Mudassar's picture
30
Jun
2010
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Please check in Message Audit logs...

Please check in message audit logs why they are being blocked.

enzo81's picture
30
Jun
2010
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There is no information in

There is no information in message audit logs on the blocked emails at all.

Cricket17's picture
30
Jun
2010
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is it all connections from

is it all connections from the sending IP, or just sometimes?

Do you have connection classification enabled ?  If NOT, then on the scanner, stmp, advanced, inbound tab, check the value of your "Maximum number of connections from a single IP address:"

enzo81's picture
30
Jun
2010
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Connection classification is

Connection classification is enabled.

According to IP Reputation Lookup, the sender's IP is listed under Default Connection Class

enzo81's picture
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Jun
2010
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Problem solved thanks to

Problem solved thanks to Alvin Lung from Symantec.

Apparently another IP address was being used to do the sending and that IP address was listed as Symantec Global Bad Sender.

Cricket17's picture
01
Jul
2010
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How did you find the correct

How did you find the correct IP and why did you initially have a different IP?