https://ahacheers.com

# manual fastmail dns configuration

## Websites

* Allows you to host websites at {mydomain.com} from your Fastmail file storage.
```CNAME {mydomain.com} web.fastmail.com```

## Standard Mail

* Allows you to receive email at standard addresses, e.g. user@{mydomain.com}
```
MX {mydomain.com} 10 in1-smtp.messagingengine.com
MX {mydomain.com} 20 in2-smtp.messagingengine.com
```

## Subdomain Websites

* Allows you to host websites at subdomains, including www.{mydomain.com} from your Fastmail file storage.
```CNAME *.{mydomain.com} web.fastmail.com```

## Subdomain Mail

* Allows you to receive email at subdomain addresses, e.g. foo@user.{mydomain.com}
```MX *.{mydomain.com} 10 in1-smtp.messagingengine.com
MX *.{mydomain.com} 20 in2-smtp.messagingengine.com```

## Webmail Login Portal

* Allows you to log in to your account at mail.{mydomain.com}
```CNAME mail.{mydomain.com} mail.fastmail.com```

## Allow mail at subdomains

* An 'A' record hides the wildcard subdomain MX record. This overrides that to allow receiving email addressed to foo@mail.{mydomain.com}
```MX mail.{mydomain.com} 10 in1-smtp.messagingengine.com
MX mail.{mydomain.com} 20 in2-smtp.messagingengine.com```

## DKIM

* Allows us to sign the mail you send so receivers can verify it's from you. This is important to ensure your message is not classified as spam. Note you'll need to add all three.
```CNAME fm1._domainkey.{mydomain.com} fm1.{mydomain.com}.dkim.fmhosted.com
CNAME fm2._domainkey.{mydomain.com} fm2.{mydomain.com}.dkim.fmhosted.com
CNAME fm3._domainkey.{mydomain.com} fm3.{mydomain.com}.dkim.fmhosted.com```
* Deprecated, for old domains only:
```CNAME mesmtp._domainkey.{mydomain.com} mesmtp.{mydomain.com}.dkim.fmhosted.com```

## SPF

* Allows receivers to know you send your mail via Fastmail, and other servers.
```TXT {mydomain.com} v=spf1 include:spf.messagingengine.com ?all```

## Client email auto-discovery

* Allows email clients to automatically find the correct settings for your account.
```SRV _submission._tcp.{mydomain.com} 0 1 587 smtp.fastmail.com
SRV _imap._tcp.{mydomain.com} 0 0 0 .
SRV _imaps._tcp.{mydomain.com} 0 1 993 imap.fastmail.com
SRV _pop3._tcp.{mydomain.com} 0 0 0 .
SRV _pop3s._tcp.{mydomain.com} 10 1 995 pop.fastmail.com
SRV _jmap._tcp.{mydomain.com} 0 1 443 api.fastmail.com```

## Client CardDAV auto-discovery

* Allows CardDAV clients to automatically find the correct settings for your account.
```SRV _carddav._tcp.{mydomain.com} 0 0 0 .
* SRV _carddavs._tcp.{mydomain.com} 0 1 443 carddav.fastmail.com```

## Client CalDAV auto-discovery

* Allows CalDAV clients to automatically find the correct settings for your account.
```SRV _caldav._tcp.{mydomain.com} 0 0 0 .
SRV _caldavs._tcp.{mydomain.com} 0 1 443 caldav.fastmail.com```