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How do you set your domain on fast mail to use @.domain.com? I only know @.

• WirelessGigabit 3y ago
  (I'm using wrong terminology) It works because if there is no entry for *.domain.com the system will go one level up, to domain.com for the MX records. It even works multi-level, like x.y.domain.com will use the MX records of domain.com (provided there are none for x & y). This is worth mentioning as x.y.domain.com does not work if you have a *.domain.com SSL certificate.
  • tetrisgm 3y ago
    Really? Cool. Would you be comfortable sharing your dns settings and or fastmail domain settings? Cool if no but I wanna give this a go!
    • WirelessGigabit 3y ago
      I don't use fastmail. I use Office365. It seems that fastmail only does *.domain.com and not *.*.domain.com: https://www.fastmail.help/hc/en-us/articles/360060591053-Plus-addressing-and-subdomain-addressing#subdomain https://www.fastmail.help/hc/en-us/articles/360060591053-Plu... Hope that helps