newsletter mailboxes
Those who send newsletters often need to setup additional mailboxes
to receive the bounced messages (e.g. bounce@…)
and optionally one for receiving reply emails (e.g. news@…)
if you want to filter them and send automatic replies to the most common requests.
For this reason we introduced two mailboxes matched to your RealSender account:
bounce@email.company-name.org -> bounce@rsXXX-realsender.com
news@email.company-name.org -> news@rsXXX-realsender.com
Explanation:
Using a Mail-From address (also known as bounce/return-path/envelope address)
with a domain other than the From address
would break the DMARC authentication
To use the "newsletter mailboxes"
you need to set up a sub-domain of the From address
e.g. the From address is: offers@company-name.org
the sub-domain could be: email.company-name.org CNAME rsXXX-realsender.com
the Mail-From address becomes: bounce@email.company-name.orgThe suggested configuration follows the rules
to send DMARC compliant emails on behalf of customers.
DMARC allows you to send authenticated emails using a sub-domain (such as email.company-name.org), and still be able to use the top-level domain in the From: header (e.g. From: offers@company-name.org).
No additional settings are required in the DNS of your domain name.
As per RFC1912 section 2.4:
A CNAME record is not allowed to coexist with any other data.
In other words, if email.company-name.org is an alias for rsXXX-realsender.com,
you can't also have an MX record for email.company-name.org, or an A record,
or even a TXT record The mailboxes have been configured so that they can receive
large amounts of emails in a short time, as in the case of bounces.
!!! Please note: email messages are automatically deleted after 7 days !!!
To download the emails, you should configure your email client,
or the application that analyzes the bounced messages,
with the following POP3 server address: pop.rsXXX-realsender.com.
Usernames and passwords are available through the website’s restricted area.