Service/smtp

Hostnames

hostname	service	port	function
smtp.sugarlabs.org	smtp	25	Local delivery (plain SMTP)
smtp.sugarlabs.org	submission	587	SMTP with STARTTLS, legacy
smtp.sugarlabs.org	submissions	465	Email relay (SMTP with SSL, password authentication required)

Hosted on

Machine/sunjammer

Administrative contact

postmaster AT sugarlabs DOT org

Sysadmins

Bernie Innocenti
(add yourself here if you tend to the postmaster RT queue)

Notes

Users with a Sugar Labs shell account on sunjammer can use our SMTP relay for personal email submission. Any abuse will be prosecuted.

The submissions port (465) is preferred for email relay. Unauthenticated and unencrypted connections are not allowed to relay.

All email originating from the sugarlabs.org domain must be submitted through our SMTP server. Failure to do so may result in your email being blocked by spam filters.

SPF

Our domains use a non-strict (~all) SPF records.

You can add an spf record in the zone file in the form

 hostname         TXT     "v=spf1 redirect=_spf.hostname.sugarlabs.org"
 _spf.hostname    TXT     "v=spf1 ip4:IPv4_of_hostname/mask ip6:IPv6_of_hostname/64 a:hostname.sugarlabs.org mx:hostname.sugarlabs.org ~all"

The a and mx values are authorized mail server by domain name and authorized server by domain MX record, the MX record should also be defined for hostname.

Also maintain spacing and formatting for each section you add in the zone file.

DKIM

Our domain publishes a DKIM key.

To test DKIM, send an email to autorespond+dkim@dk.elandsys.com