To avoid mailer daemon or loss of e-mails in the e-mailing system due to failure, servers (ETRN servers) are defined as a secondary address to the subscriber’s incoming e-mails and this service is called ETRN, which stands for Extended Turn.
Properties
ETRN service shall be charged per domain name on a monthly basis. No additional charges shall be collected for different e-mail accounts with the same domain name.
No commitment is requested for ETRN service.
To benefit from ETRN service, subscribers need to have at least one of the Server Hosting and Virtual Server.