My pleasure, have a good week-end and some fun with DMARC.

zim_mike wrote:I think I have it right.

The mail server domain has its own dmarc, dkim and spf records in it's DNS.
All of the domains hosted on it also have their own dmarc, dkim and spf records in their DNS.

Yes, spot on.

Are you following the wiki article here: https://wiki.zimbra.com/wiki/Best_Practices_on_Email_Protection:_SPF,_DKIM_and_DMARC#DMARC Effectively what you're doing for each domain is creating a DKIM signing key and adding that to a Public DNS server, next you also add a DMARC record to the Public DNS ...

The 'none' option should just report if the mail is failing DMARC rather then it being rejected. Obviously there test sites that will verify if your DMAR settings (and send you a report) are correct as will sending a message to gmail - in those circumstances you don't really want it to be rejected, ...

That might explain why some email keeps landing in spam bins from the domains that are hosted on that server. Do I use the same method as the main domain, meaning... /opt/zimbra/libexec/zmdkimkeyutil -a -d domain1.com /opt/zimbra/libexec/zmdkimkeyutil -a -d domain2.com /opt/zimbra/libexec/zmdkimkey...

zim_mike wrote:My question is, should I be creating a DMARC key for each of those domains, even though they are using the mail server for their mail services?

The answer to that question would be yes you should create a DMARC (and SPF etc., etc.) DNS records for each domain.

unsatisfieduser wrote:Uh, i completely missed the "show" button in the wiki

It's easy to overlook.

unsatisfieduser wrote:I apologize for my stupidity and wish you a nice day.

No need to apologise, we all make mistakes. Hope the move to your new server goes OK.

I've read about ZeXtras migration tool, which i don't want to use because i can't find the right tutorial/information. Use the ZeXtras Migration Tool, it's by far the easiest method and you must be joking about the 'tutorial/information': https://www.startpage.com/do/dsearch?query=%2Bzextras+%2Bmig...

Where is proper Documentation for Exchange to Zimbra Migration. Is it a hidden story ? Why don't you go to the Product Documentation and read that or you could even do some research first, such as this: https://www.startpage.com/do/dsearch?query=%2BExchange+to+Zimbra+Migration&cat=web&pl=op...

yohoho wrote:Object:
1. mail.x.com (We follow Zimbra Installation guideline and use mail.x.com as the primary domain)

That is not 'Zimbra guidelines' and that is the FQDN of your server and your primary domain would be "y.com", you need to fix your installation before going any further.