For blocking .zip attachments you will want to use the "Account Level Filtering" area of your control panel. Create a Rule for Body contains .zip
Action can be "Fail with message: This user doesn't accept .zip attachments."
You can use this method for any file extension. For example blocking .rar attachments use the "Account Level Filtering" and create a rule for Body contains .rar
The error message "550 Access denied - Invalid HELO name" means that the server you are trying to...
When receiving the error, The host yourdomain.com could not be found, the POP3/IMAP (incoming...
When you try to send and receive messages by using Outlook Express, you are able to send...
Your mail server names are mail.yourdomain.com. The server name will be the same no matter how...
This can occur for several reasons. Make sure you have the proper spelling of the email...
LiveChat
Support
Blog
Affiliates