Knowledgebase

The anti-hammering policy is to protect users from denial of service attacks, brute force password scanning and poorly configured mail clients.  It applies to the email servers.

A hard limit applies to the number of connections allowed to originate from a single IP address in a period of time.  The details are as follows:

Maximum allowed number of POP3 connections per minute per IP: 10
Maximum allowed number of IMAP4 connections per minute per IP: 10

Customers exceeding this rate of connections will have your IP address blocked for 15 minutes during which time you cannot access your email.  After the 15 minutes period has passed, you may resume connections to our mail server as long as you do not exceed anti-hammering limits again. This policy should not affect normal usage unless you configure your POP3/IMAP client to check messages every 6 seconds.  

We suggest POP3 email be configured to check every 15 minutes and no more than once every 1 minute.

Please remember manually pressing Send/Receive on your email client software is equivalent to a connection.