Cloudmark problem

Hi,

Today I received an "Undelivered Mail Returned to Sender" message with the following error :

ERROR_CODE :550, ERROR_CODE :mwinf5c05 ME Adresse IP source bloquee pour incident de spam. Client host blocked for spamming issues. OFR006_102 Ref http://csi.cloudmark.com/reset-request/?ip=31.186.226.21 [102]

It seems that Cloudmark has blacklisted one of your IPs.

Can you do something about it?


Thanks.