The mail filtering service is the removal of viruses and unwanted emails from your mailbox.

There are two main types of emails to filter: those containing viruses and those containing advertising messages (usually called junk or spam). The filters intercept those messages and avoid entering your mailbox. GRN can offer 2 types of independent filters:

• Antivirus filters

Antivirus filters analyze the content of emails for viruses. If an email is infected by a virus will be removed before being delivered to the mailbox. This prevents viruses to arrive in our mail client and add a high level of protection against such threats.

• Antispam filters

The spam filters analyze email content to determine if it is spam. If so, the filter leaves the message for a week in a server folder. The folder you saved the spam can be accessed via webmail or IMAP as the spam filters can not ensure 100% efficiency and if it falls  we need a mechanism so that the message can be recovered.

The spam filters were constantly autolearning how to detect these emails, as spammers always try their spam mails to be delivered. Filtering level can be configured and GRN recommend not using too strict levels because it is better to receive a spam mail than losing good one dropped by the filter.

Ask for information at admin@grn.cat

The mail relay and mail backup services are aimed mainly at small and medium enterprises that have a mail server on their offices and they want to ensure the reception of mail in the event of fall of their Internet link. Both services are valid for more than one domain and may be associated with different spam and antivirus filters and security policies.

The mail relay service is based on publishing GRN MX servers for your domain so that any impact on your server connectivity will ensure you continue receiving mail. The service will also be offered if you have a dynamic IP. GRN mail servers are permanently and redundantly connected to the Internet to avoid unwanted losses of email. Once your service is restored, our servers will forward to your server the mail temporarily stored on our servers.

The mail relay service also have the option of hiring an output relay mail service so that our range will have a unique IP to exit the Internet to do your postings and configurable inverse name resolution. GRN controls the major Internet Blacklist to analyze if your IP output has been included in any of these lists and why.

On the other hand, the mail backup service consist of configuring our mail servers as additional MX servers with a lower priority. In case of loss of your servers, the operation is the same as the mail relay, mails will be stored on our servers until your service is re-established.

You can contact us for more information as well as the features, conditions and prices of services at admin@grn.cat