Registrar Sign-up Page! Submit your Mail Server IP addresses below to be white-listed, and your domain
registrants can also use the @spamblock.ca service.
Note: You enter your mail server IP addresses below. If you are a Tucows reseller, you do not
need to obtain the Tucows/OpenSRS mail server IP address, as they are already white listed. If you are a reseller for
another Registrar, then besides your own mail server IP addresses, you will need to obtain the mail server IP
addresses of the actual Registrar as well, if their system will be sending out any legitimate domain related email. If you
are an accredited CIRA or ICANN registrar, you need to provide all mail server IP addresses that legitimate email to domain
registrant, will be sent from.
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