SpamStopper setup:
- Navigate to Services > SpamStopper > Destination Server Address and set your email server address. Please be cautious as it affects the mail delivery
- Navigate to Domain Names page and add your domain names
- Navigate to Users or Services > SpamStopper > Manage Users and create all the users. Please make sure you add all existing email addresses (aliases) for a user (number of aliases is limited by 10)
- Navigate to Services > SpamStopper in your HostPilot interface to manage its settings.
- Point MX records for your domains to SpamStopper servers. Please refer to the following article for more information “How do I repoint my MX records?”
Anti-SPAM protection is based on the open source SpamAssassin filtering software that, besides checking against real-time black lists, uses a sophisticated analysis of message header and text to assign a weight to each message. This weight is called a spam score. A higher spam score indicates a higher chance that the message is spam. When the assigned weight exceeds a certain threshold, the filter routes such messages to a "Junk Email" folder or permanently deletes it with the exceptions when the sender is a member of your White list - either account level or mailbox level. You can change how messages are handled based upon the spam score they receive. Adjust the settings by sliding the handles.
By default SpamStopper is set to automatically delete all messages with a spam score of 25 and higher. Since no spam filter is perfect, some legitimate messages may be erroneously identified as spam and deleted. Unless you opt out of the automatic deletion by going to SpamStopper settings and checking the “Don’t Delete” checkbox, you agree to accept such risk of loss.
Regardless of whether or not the SpamStopper service is being used on an account, the following checks are always performed:
- check against DNSBLs (DNS-based Blackhole Lists) per list below:
- dnsbl.njabl.org - open relays based on submissions and tests
- cbl.abuseat.org - probable open proxies, machines likely infected with spyware, trojans or viruses that send email
- check for empty TO and FROM fields in Headers (not in the "message envelope");
- check for a valid fully qualified senders (FROM) e-mail address;
- check for a valid domain in the FROM address (check for a valid A or MX record).
All e-mail messages that do not pass any of the above checks are not accepted by the mail servers for delivery to recipients.
Manage Account Wide Blocked/Safe Senders Lists
Add New Address to Blocked/Safe Sender Lists
Account Wide Blocked/Safe Sender Lists
Account Wide SpamStopper Options
Manage Account Wide Blocked/Safe Sender Lists:
If an email address or domain is on the Account Blocked Sender list, any e-mail from a sender which matches will be discarded independently of the Account Wide SpamStopper settings below.
If an email address or domain is on the Safe Sender list, then any mail from that sender will be delivered to the mailbox of the recipient, regardless of the spam score.
Please note: DNSBL checks are performed during the SMTP transaction and rejected prior to the DATA command. The mail is rejected before the message is received; therefore, mail from sending mailservers whose IPs are on one of the DNSBLs used by Intermedia will be rejected even if they are on the Account Wide WhiteList. There is NO work around or fix for this, other than for the sender to have their IP address removed from the listing DNSBL.
Add New Address to Blocked/Safe Sender Lists
The email address or domain to be added to the white or black list should be entered in the box on the appropriate tab. The format for an email address must be name@domain.com. The format for a domain must be @domain.com – this will cause mail from ALL USERS at domain.com to be treated as spam or WhiteListed. Wildcards (* or ?) are not allowed in the Blocked or Safe Senders lists (e.g. @*.tld or @domain??.tld).
Account Wide Blocked/Safe Sender Lists
Domains and email addresses which are contained on either the Blocked or Safe Sender lists are shown here. You can see Blocked or Safe Sender lists by clicking an appropriate tabs. Addresses can also be filtered by starting letters using the the edit bar and Apply Filter button on the top.
To remove an email address from its respective list, check the box next to that address (or addresses) then click Delete Address(es).
The current Blocked or Safe Sender lists can be exported to a file by clicking the Export List to CSV File button on the appropriate tab.
Account Wide SpamStopper Options:
Set X-Spam-Status to "Yes"- If this radio button is used, any messages evaluated by SpamStopper as spam, based on the current protection level setting, will have X-Spam-Status in the message headers set to "Yes".
Just add '[SPAM]' prefix to Subject for spam messages and still deliver to mailboxes If this radio button is used, the '[SPAM]' prefix will be added to the Subject for SPAM messages
Reject messages with 'bad' mail headers - If this radio button is used, the server will reject mail with headers that are not compliant with RFC-2821 (RFC 2821 is the “standard” for the Simple Mail Transfer Protocol (SMTP). 'Bad' headers can contain executable code and be used to infect client systems. Select "No one" if you do not want to receive messages with bad headers. You can also choose "Safe Senders Only" or "Everyone" to accept such messages from certain senders or from any sender accordingly.
Reject messages with dangerous attachments - Please see KnowledgeBase Article 1493 for a list of prohibited attachments.
The changes above will not take effect until Save Changes is clicked. |
