Email provider

Fastmail DNS records

Independent, privacy-respecting email with your own domain. Records can be added at any DNS host.

Where is your domain's DNS managed?

Each guide below uses that host's field names, steps and known problems.

These are the values for any DNS host. Field names differ between hosts, so use the host guides above for the exact boxes to fill in.

Record	Type	Host / Name	Value	Priority	TTL
MX records Where incoming email goes	Type	MX	Host / Name	`@`	Value	`in1-smtp.messagingengine.com`	Priority	10	TTL	Default
MX records Where incoming email goes	Type	MX	Host / Name	`@`	Value	`in2-smtp.messagingengine.com`	Priority	20	TTL	Default
SPF record Which servers may send as you	Type	TXT	Host / Name	`@`	Value	`v=spf1 include:spf.messagingengine.com ?all`	Priority	n/a	TTL	Default
DKIM A signature on every message	Type	CNAME	Host / Name	`fm1._domainkey`	Value	`fm1.yourdomain.com.dkim.fmhosted.com`	Priority	n/a	TTL	Default
DKIM A signature on every message	Type	CNAME	Host / Name	`fm2._domainkey`	Value	`fm2.yourdomain.com.dkim.fmhosted.com`	Priority	n/a	TTL	Default
DKIM A signature on every message	Type	CNAME	Host / Name	`fm3._domainkey`	Value	`fm3.yourdomain.com.dkim.fmhosted.com`	Priority	n/a	TTL	Default
DMARC record What to do with fakes · recommended	Type	TXT	Host / Name	`_dmarc`	Value	`v=DMARC1; p=none;`	Priority	n/a	TTL	Default

What Fastmail's documentation says about each record, in one place.

This is the exact value from Fastmail's manual DNS guide, which ends in ?all (neutral).

Adding fewer than three DKIM records

Fastmail signs with three selectors (fm1, fm2, fm3). All three CNAMEs are required.

Adding a second SPF record

Only one record may start with v=spf1. Merge Fastmail's include into the existing one.

Enter your domain to see which records are in place.