_smtps._tcp dns record

trondandre

I am litle confused about when click on dns client domain and it show: smtps.tcp.clientdomainname.com in srv but it say nothing about the port i should point to?

And in the mailcow advanced dns it comes up with the mailcow host name and port 465 but what is the right dns i should use for my client in the dns in cloudflare for this pointing ( smtps.tcp.) ?
Is it port 465? and is it smtps.tcp.clientdomainname.com ?
Somone can help me out here?

esackbauer

Read this thoroughly again, and do not forget about the underscores, or it wont work:
https://docs.mailcow.email/getstarted/prerequisite-dns/#the-advanced-dns-configuration
And you KNOW the difference between an A and a SRV record, do you?

trondandre

esackbauer
Thanks for your replay but maybe you misunderstand me now.
I mean:
for an client : in the dns record: what port is it for this record: smtps.tcp.clientdomainexample.com
And is the clientdomain i must use? ore is it the mailcow hostname i must use
It say nothing about the port when click on the dns for this domain in the admin panel.
And yes. I know the difference for A and SRV records.
And i do not mean in the mailcow dns explain, but in the dns record in the admin when click on one domain.

esackbauer

trondandre And is the clientdomain i must use

What do you mean with “clientdomain”? Probably just another mail domain with MX record?
Then of course you must create all those records for this mail domain, too. And point them to the mailcow hostname.

trondandre

esackbauer

It is an good practic to not write the realdomain name to everyone
it like this in the dns from mailcow adminpanel:
smtps.tcp.thedomainname.com SRV mail.mailcowhostname 2
Where “thedomainname.com” is the domain to my client.
But again: it is not stand any port to use in srv.

esackbauer

trondandre But again: it is not stand any port to use in srv.

A SRV record without port number is not complete. Ask your DNS provider how to enter it properly.