Solved

Office 365 Migration and MX entry

Posted on 2016-10-12
7
72 Views
Last Modified: 2016-10-12
Hi, we are planning following scenario:

What we have now:

Domain test.de associated to a Webserver product at our hosting provider.
The MX entry for test.de goes to the mail cluster of the hosting provider.
We have mailboxes user@test.de online hosted form the hosting provider.
We have an internal exchange server that fetches e-mail from online malboxes via POP3.
Outgoing mail from exchange to the internet is sent by using the smarthost (SMTP) from out hosting provider.
Newsletter-tools are also using the provider`s smarthost for sending e-mails withe the sender adresse e.g. newsletter@test.de.


What we are planning:

Migrate our  internal mailboxes over to Office 365.
Change the MX record for test.de to Office 365.
We will have a spf entry entry that includes as well the Office365 server and the mailcluster servers from the hosting provider.
The domain managemet for test.de stays at the hosting provider.

Is it possible and save that we will still use the mailboxe newsletter@test.de that is located at the hosting provider for outgoing smtp mail (as smarthost) with newsletter tools?

The background is that Office 365 limits outgoing mail per minute and day and that ist notacceptable for newsletters.

I`m afraid that there could be problems with spam-handling if we send as sender newsletter@test.de and the MX record shows to another server (Office 365) than the sending server (hosting provider). Would there be a problem with "Smtp Reverse Dns Mismatch"?

How do you handle that?

Many thanks in advance!
0
Comment
Question by:Systemadministration
  • 2
  • 2
  • 2
  • +1
7 Comments
 
LVL 25

Assisted Solution

by:-MAS
-MAS earned 250 total points
ID: 41839873
You dont need to worry about this.
You can keep one mailbox in the current server and move the rest to the O365.
Keep both the MX entries till you successfully configure hybrid configuration.
Once you are done with it you can delete the old MX entry.

FYI your onprem mailboxes are sending emails through the on-prem exchange server as if you are sending before doing a hybrid.

Reverse DNS is not a requirement of O365. It will still remain the same.
1
 

Author Comment

by:Systemadministration
ID: 41839890
We are not planning to do a real exchange hybrid configuration.
What I just want is to have mailboxes for the newsletters on the "old" provider side and send valid e-mails to the internet alltough the MX record is not there anymore.
Would that be a problem?
0
 
LVL 49

Accepted Solution

by:
Akhater earned 250 total points
ID: 41839902
You should NOT send newsletters thru office 365, if you are happy with your current provider to send newsletters and you keep that IP in the SPF there is no reason why you will not be able to send newsletter from your hostprovider no matter if your MX is on office 365 or not.

You will just not be able to receive emails sent to newsletter@test.de on your old provider

for the reverse DNs you can just have any record pointing to your other host IP address something like SMTP-News.test.de or anything
0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 

Author Comment

by:Systemadministration
ID: 41839919

for the reverse DNs you can just have any record pointing to your other host IP address something like SMTP-News.test.de or anything

OK, if I understand it right I won`t have to change anythin regarding Reverse Lookup, because the outgoing mail on my provider side is already running over the mailcluster and it is working fine now.
0
 
LVL 49

Expert Comment

by:Akhater
ID: 41839921
you don't manage the reverse lookup zone of your provider anyway, you couldn't change it even if you want/had to
0
 
LVL 38

Expert Comment

by:Adam Brown
ID: 41840056
You'll be able to do this without any changes to your MX records. You just need to make sure that your SPF records include the IP address your mail server is sending from.
0
 
LVL 25

Expert Comment

by:-MAS
ID: 41840064
Agree with Adam. Just required to add IP in the SPF record.
I missed out in my post.
0

Featured Post

U.S. Department of Agriculture and Acronis Access

With the new era of mobile computing, smartphones and tablets, wireless communications and cloud services, the USDA sought to take advantage of a mobilized workforce and the blurring lines between personal and corporate computing resources.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Calendar and Email kept in Andriod 6 23
Loading Office 2016 on virtual machines 5 23
Move for SBS 2011 to Office 365 3 33
Office 365 and Outlook 2010 4 26
Learn to move / copy / export exchange contacts to iPhone without using any software. Also see the issues in configuration of exchange with iPhone to migrate contacts.
This article explains how to prepare an HTML email signature template file containing dynamic placeholders for users' Azure AD data. Furthermore, it explains how to use this file to remotely set up a department-wide email signature policy in Office …
Office 365 is currently available in five editions. Three of them are for business use: Office 365 Business Essentials, Office 365 Business, and Office 365 Business Premium. Two of them are for home/personal use: Office 365 Home and Office 365 Perso…
In a previous video Micro Tutorial here at Experts Exchange (http://www.experts-exchange.com/videos/1358/How-to-get-a-free-trial-of-Office-365-with-the-Office-2016-desktop-applications.html), I explained how to get a free, one-month trial of Office …

863 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

27 Experts available now in Live!

Get 1:1 Help Now