Comments on: Managing Changes to MX Records and Incoming Email Traffic https://practical365.com/changing-mx-records/ Practical Office 365 News, Tips, and Tutorials Fri, 24 May 2024 10:08:03 +0000 hourly 1 https://wordpress.org/?v=6.6.1 By: Sameer Mkhtar https://practical365.com/changing-mx-records/#comment-294525 Fri, 24 May 2024 10:08:03 +0000 https://www.practical365.com/?p=5725#comment-294525 Hi Paul, kindly help the below scenario
1- we have exchange 2019
DAG mailbox server roles
EX0-1 172.16.1.10
EX0-2 172.16.1.10
https access NAT (spacename email.domain.com/owa )
facing protocol TCP 443 on public IP 95.33.xx.5)
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2- DMZ inside 192.168.4.20 ( mail gateway)
mail gateway IMSVA delivered method (routing) and facing protocol TCP 25 on public IP 95.33.xx.4 (ISP PTR record mail1) mail1.domain.com
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the problem is that we cant able to access OWA form outside
Incoming /outgoing emails NOT working.
kindly tell me correct MX records in the public DNS and internal DNS zone
your support is highly appreciated

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By: despoina https://practical365.com/changing-mx-records/#comment-225722 Tue, 10 Sep 2019 06:13:29 +0000 https://www.practical365.com/?p=5725#comment-225722 hi Paul,
i would like to ask you, about undelivered report after unistall an old exchange server and change the domain name. I unistalled my old exchange and moved to office 365 but when someone send a mail to my old domain, no undelivered report sending to him as an answer. What have to do, all the senders ( to old domain) receive an undelivered report when they send message to old domain?

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By: Rustam Amiry https://practical365.com/changing-mx-records/#comment-220101 Mon, 22 Jul 2019 09:03:06 +0000 https://www.practical365.com/?p=5725#comment-220101 Hi Pual, we have actually one exchange server, our company is going to change the ISP so I should go and point the new public IP to my mx record or I should assign the new IP and wait for 24 or 48 hours to update then assign the new public IP to exchange server. Thanks a lot.

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By: <div class="apbct-real-user-wrapper"> <div class="apbct-real-user-author-name">Paul Cunningham</div> <div class="apbct-real-user-badge" onmouseover=" let popup = document.getElementById('apbct_trp_comment_id_159506'); popup.style.display = 'inline-flex'; "> <div class="apbct-real-user-popup" id="apbct_trp_comment_id_159506"> <div class="apbct-real-user-title"> <p class="apbct-real-user-popup-header">The Real Person!</p> <p class="apbct-real-user-popup-text">Author <b>Paul Cunningham</b> acts as a real person and passed all tests against spambots. Anti-Spam by CleanTalk.</p> </div> </div> </div> </div> https://practical365.com/changing-mx-records/#comment-159506 Sun, 17 Jun 2018 23:29:22 +0000 https://www.practical365.com/?p=5725#comment-159506 In reply to Kent.

Yes, you can point your name servers at another DNS provider, and then configure any DNS records you need in your DNS zone hosted by that new DNS provider. It may take 24-48 hours for everyone else on the internet to start querying your new DNS provider for your domain, so don’t cancel your old service immediately, give it a couple of days. You can use a service like whatsmydns.com to check propagation of your name server change.

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By: Kent https://practical365.com/changing-mx-records/#comment-159504 Sun, 17 Jun 2018 20:08:00 +0000 https://www.practical365.com/?p=5725#comment-159504 Quick correction…I plan to have Microsoft 365 manage DNS for me (not GoDaddy).

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By: Kent https://practical365.com/changing-mx-records/#comment-159503 Sun, 17 Jun 2018 19:54:42 +0000 https://www.practical365.com/?p=5725#comment-159503 Hi Paul,

This great and informative blog post is greatly appreciated!

I know it’s been a while, but I am hoping you, might have a minute for what I think is a quick question (well, a question that likely has a quick answer).

My domain is registered with GoDaddy but “hosted” (no web site), along with email, by a local provider (Name servers in GoDaddy are configured as the local provider’s servers). I am cutting all ties with the local provider and wish to move my email to Exchange Online.

Without any support from the local provider, is it possible for me to simply change the DNS servers to the default in GoDaddy and create a new MX record (in GoDaddy) to point to Exchange Online?

I have familiarized myself with the process. I plan to do it when email traffic is nil and will have all the accounts (very few) created in EO and all emails migrated (both from the local provider and Outlook pst files).

Just a quick yes or no to the aforementioned question is all I ask. 🙂

Sincerely,
Kent
SW developer in Missoula, MT

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By: Gustavo https://practical365.com/changing-mx-records/#comment-156376 Fri, 01 Dec 2017 13:44:32 +0000 https://www.practical365.com/?p=5725#comment-156376 Hi Paul,

I have a question.

We have actually two exchange server, one in Brasil and another in Argentina, Argentina is hosting the Forest Root, and Brasil is a domain in this forest, but remotelly. We had created trusted relationship between two domains. But now, we need to route inbound Argentina mails trhorugh Brasil. Question is: We only need to change MX records to point to Brasil IP and Exchange Server automatically will route through AD sites and services to Argentina? and what happens to outblound traffic ? if we decide route outbound emails from Argentina Exchange Server, we only need to modify Brasil SPF´s to add autorized Argentina IP´s? and another question. What we need to create to route Argentina outbound emails traffic to Brasil (MPLS connected) ?. Thanks a lot.

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By: Mk https://practical365.com/changing-mx-records/#comment-16060 Tue, 06 Sep 2016 06:34:42 +0000 https://www.practical365.com/?p=5725#comment-16060 In reply to Paul Cunningham.

Hi Paul,
I have same situation but mine is Exchange 2016. Currently I’m using POP3 to download mails from web mail to Exchange server. Now I want to change domain MX record to directly pointing to Exchange server, so that all the incoming mails will come directly to my server.

Pls help!

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By: Bdubs https://practical365.com/changing-mx-records/#comment-16059 Tue, 14 Jun 2016 20:52:06 +0000 https://www.practical365.com/?p=5725#comment-16059 Paul,
This is a great article, as are many other’s I have seen from you. You have a great way of breaking down exchange/technical concepts for us less technical admins. I am a newer exchange admin for a small organization with only one active site. I have a scenario that I think this might be helpful for and would love your advise.
I have a remote site for disaster recovery with identical servers mothballed, that I plan to use as a lab environment. I am also trying to work out a way to use this site as a failover for extended electrical outages we have in our main office. I do not want to have these servers active normally except for these rare occasions where we have a maintenance window of more than 1 or 2 hours once every year or two. I am planning to use backup appliance devices that have instant recovery options for virtual servers. My question is how do I cut over the mail flow and connections on command without having active remote servers and load balancers.
Can I use lower preferenced dns/mx records, and simply enable the NAT on the remote site firewall once I have powered off the main site and want mail flow changed over? I’m worried about what emails I would lose while waiting for the change to propagate. Of course I would have to change it back again once the maintenance is complete.
Thanks.

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By: Radhakrishnan https://practical365.com/changing-mx-records/#comment-16058 Wed, 30 Mar 2016 04:35:28 +0000 https://www.practical365.com/?p=5725#comment-16058 Thank you Paul..

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