dictionary attack - blocked from email

[mbrando]

Hi,

I have a client with about 6 people in their office and everyone seems to get blocked from sending email at least once with authentication errors and an error claiming something about a dictionary attack. I understand that there is a monitor on the jetta server that watches for email abuse. The client claims they are only checking email and repsonding to wait comes in. How can I prevent them from being blocked? What is the trigger for this to avoid? It takes about and hour each time it comes up to clear the block. I cannot seem to get any detailed info from support. I've opened a ticket on this more than once. Feed back and ideas welcome.

Mike

[mbrando]

I received this from support. I'll have to have the client check for virus on their system.

We have enabled a script on server which block IP Address of machine if more that 9 connections per minute are attempted on server, it seems that your local computer may have been infected by viruses which tries to make number of connections per minute on server, so please make sure that your computer is not infected with viruses.