Security and SPF records
Our Email Service and Security
Security is important to Esendex. We know how important it to our customers that your messaging account stays secure no matter how you choose to send your messages. Echo for Email has been designed with this in mind to make sure that your account is accessible only to you and who you choose to use it. Echo for Email will only allow authorised mail addresses to send an email from your account. Using technology similar to the Domain Name System (DNS), Echo for Email will map the IP address(es) or your mail server, to an email address. During the set up process of Echo for Email we will store the email address you wish to authenticate within our database. Once the user has replied to state they want to authenticate the service, we will register the IP address of your mail server. We will then do a database lookup for any requests to send email messages on your account. If they are a registered Echo for Email user and have an IP address that matches one on your authenticated list, then they will be able to send SMS messages. Any attempts that come from an unauthorised mail address or IP will be rejected. If you have a mail server that has a mass range of IP addresses you may wish to set up an SPF record to resolve any authentication failures on your account. More about this can be found below.
Echo for Email and SPF Records
As part of its security to ensure that only authorised emails can send messages, Echo for Email, will look for an SPF record on your domains DNS. An SPF record is used to show other mail servers, what server or IP addresses are being used to send an email for a domain. Mail servers are then able to reject emails that are sent from other locations as possible spam. As such we recommend that yourself or your IT department creates an SPF record for your domain. Please click on one of the following links below for further information on setting up an SPF Record for:
MessageLabs (now part of Symantec)