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Revision as of 15:36, 8 July 2020 by Bernie (talk | contribs) (update to the current state)
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hostname service port function smtp 25 Local delivery (plain SMTP) submission 587 SMTP with STARTTLS, legacy submissions 465 Email relay (SMTP with SSL, password authentication required)

Hosted on


Administrative contact

  • postmaster AT sugarlabs DOT org



  • 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 for the domain must be submitted through our SMTP server. Failure to do so may result in your email being blocked by spam filters.


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


Our domain publishes a DKIM key.

To test DKIM, send an email to

See also