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Murray155

: PostmarkApp inbound domain creation for MX record redirection I'm trying to use Postmark App service (https://postmarkapp.com) to forward email to my subdomain to my PostmarkApp server. I'm trying

@Murray155

Posted in: #Dns #DnsServers #Email #Postmark

I'm trying to use Postmark App service (https://postmarkapp.com) to forward email to my subdomain to my PostmarkApp server.
I'm trying to use inbound domain forwarding by configuring my MX record to point to my Postmark email server.
The Postmark docs mentions to give the MX record a value of 10 (which i did) and to post to an inbound domain you will create at Postmark.

The problem i have is creating a valid domain at PostmarkApp...
Specifically, the docs mention:
"In your DNS configuration, create an MX record that points to inbound.postmarkapp.com and give it a value of 10"
Where inbound is this example is the name of the server they have created inside PostmarkApp.

I can configure the inbound domain in the server settings page. Inbound domains are unique across Postmark and are server-specific.

So i went on my PostmarkApp's server's setting page i went ahead and inside the Inbound Domain i gave a random name, to ensure there are no conflicts with other inbound domains from other users/servers inside PostmarkApp.

I got an error with this accompanying message:
"We could not find an MX record pointing to inbound.postmarkapp.com for this domain."

I don't even understand the nature of this message. I thought i would set up my inbound domain for my server on Postmark. Then i would go to my dns records on my domain and give an MX record of 10:myserversname.postmarkapp.com

So what do i put inside the Inbound Domain settings in order to create the effect i want?

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@Merenda212

You need to add the MX record to your domain first - go to your domain's DNS records (wherever these are managed), and add an MX record for your subdomain to point its mail to inbound.postmarkapp.com with a priority of 10.

For example:

sub.john-john.com MX inbound.postmarkapp.com 10

In Postmark's documentation, inbound.postmarkapp.com isn't just an example - it's the address of their inbound mail server and is where you need to point your MX to - and is also where they ask all of their inbound customers to point their MX records to.

How will Postmark then know where to deliver your mail to? They'll deliver it based on where it is addressed. Firstly, the sending server will do a DNS lookup of your domain, find inbound.postmarkapp.com, and then contact Postmark's server to say "I've got an e-mail for john@sub.john-john.com, can you accept that?" Because your subdomain is indeed set up with Postmark, Postmark will then accept the message and deliver it accordingly.

As for what to call your subdomain, if you own your own domain, it's completely up to you. I've just used sub and john-john.com in this example, but replace that with whatever your domain is and whatever you would like your subdomain to be. :)

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@Kimberly868

Tim is correct. You will need to point a subdomain on your domain to inbound.postmarkapp.com, using an MX record.

So, inbound.yourdomain.com will have an MX record of inbound.postmarkapp.com with a priority of 10.

Then, when verified in Postmark, you can send emails to anything@inbound.yourdomain.com.

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