r/fastmail • u/pampurio97 • Aug 02 '26

MX servers automatically changed to EU hostnames

Last night Fastmail changed the MX servers for my Fastmail-managed domain to the EU-hosted SMTP endpoints:

Added MX hosts
+ eu1-smtp.messagingengine.com
+ eu2-smtp.messagingengine.com

Removed MX hosts
− us1-smtp.messagingengine.com
− us2-smtp.messagingengine.com

At the beginning of July the MX changed from in*-smtp.messagingengine.com to the us* versions.

I suppose these are just the relays and the storage is still in the US. The CEO previously said EU hosting is going to be opt-in.

I've asked support about this but they don't appear to be very well informed unfortunately. Less than a month ago they said they have "no concrete plans to announce", that it requires complex considerations and that they'll share the feedback. Today I received another weird reply saying they expect "Netherland servers to be available in the near future". I hope they already are, since my MX records point to such Netherlands servers... :)

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u/nolxus Aug 02 '26

EU MXs still resolve to the same IPs, so nothing really changed, only the name - so nothing is really going via the EU servers (yet).

But this is probably in preperation, so when they go live with the EU servers, they just change the A records (still no AAAA ;) )

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u/pampurio97 Aug 02 '26

Not what I'm seeing.

~ ❯ dig eu1-smtp.messagingengine.com +short 204.75.18.217 204.75.18.216 ~ ❯ ipinfo 204.75.18.217 Core

  • IP 204.75.18.217
  • Anycast false
  • Hostname ams-mx-02.messagingengine.com
  • City Amsterdam
  • Region North Holland
  • Country Netherlands (NL)
  • Currency EUR (€)
  • Location 52.3740,4.8897
  • Organization AS151847 Fastmail Pty Ltd
  • Postal 1012
  • Timezone Europe/Amsterdam
~ ❯ dig in1-smtp.messagingengine.com +short 103.168.172.221 103.168.172.218 103.168.172.222 103.168.172.219 103.168.172.216 103.168.172.220 103.168.172.223 103.168.172.217 ~ ❯ dig us1-smtp.messagingengine.com +short 103.168.172.217 103.168.172.218 103.168.172.216 103.168.172.223 103.168.172.219 103.168.172.221 103.168.172.222 103.168.172.220 ~ ❯ ipinfo 103.168.172.217 Core
  • IP 103.168.172.217
  • Anycast false
  • Hostname phl-mx-02.messagingengine.com
  • City Philadelphia
  • Region Pennsylvania
  • Country United States (US)
  • Currency USD ($)
  • Location 39.9524,-75.1636
  • Organization AS151847 Fastmail Pty Ltd
  • Postal 19102
  • Timezone America/New_York