Outlook emails not deliverable to yahoo and aol

Is there a workable solution to receiving emails from users? I also have problems receiving emails from my wife's account on ******@gamil.com and ******@aol.com

Your MX points to mail.protection.outlook.com and that's Microsoft 365 mail hosting service. As Brad says, you need to read the article and create an SPF, You may as well create DMARC and DKIM records.

If they had you update those records for their service, they most likely only cared about the service they provided for you, which could break other aspects of email flow. I had a customer try to setup a Mailjet email service last week and they proceeded to break their email flow by changing DNS records to what Mailjet recommended without accounting for the M365 email flow. I had to create custom records that would authenticate both M365 and Mailjet for their domain. If you have support, I'd reach out to this 3rd party, tell them the records they had you create caused other email flow issues, let them know you are using M365, and perhaps they can get you the correct records to authenticate both services. M365 is big enough that I'd expect them to know the correct settings.

Also - there's a reference to mcsv.net, which appears to be from Mailchimp.

There was a notification a little while ago that DMARC, DKIM, and SPF records needed to be updated and validated in order for their service to work, so I cut-and-pasted whatever they generated into our records.

All advice is assuming your email is hosted on Microsoft 365.

First thing I see is that you do not have an SPF record posted for your domain.

According to the internet, your domain is hosted by register.com, so you will need your register.com account login and password.

Once logged in, you will want to find where to manage DNS records for your domain. Don't delete any records, you'll want to create a new record, the record type is TXT, name is just @, and the value would be -

v=spf1 include:spf.protection.outlook.com -all

Once created, I can run a check to see if it was put in correctly.

Here is the link to the Microsoft article about creating this and other records that might be needed. https://learn.microsoft.com/en-us/microsoft-365/security/office-365-security/email-authentication-spf-configure?view=o365-worldwide

We are having the same issue. Our domain name is @ahif.org and any help you can provide is appreciated.

Thank you!

We are having the same issue. Our domain name is @ahif.org and any help you can provide is appreciated.

Thank you!

Just to reiterate for you and all the people coming here, thinking Microsoft can fix this for you, they cannot. If you are using your own domain (aka: custom domain) for email hosted in M365, you need to work with your IT or your domain host, or do your own research to confirm that the necessary DNS records.

I find SPF records are the easiest to create and manage. You can look up your SPF record by doing a google search for "spf lookup". I most often use the checker from MX Toolbox. If you are using M365, your SPF should look something like this -

v=spf1 include:spf.protection.outlook.com ~all

At the bottom of the lookup, it will tell you "Reported by", this will tell you who is hosting your DNS, that is where the SPF record gets created / modified. You log in or reach out to that DNS hosting company, and create or edit the TXT DNS record for SPF there. Setting up DKIM and DMARC gets a little more complicated, and are not necessary if you have a valid SPF record, and turn off the SPF record for the "OnMicrosoft.com" domain which I outlined in my post on page 2 of this thread.

FOR ANYONE continuing to post to this thread looking for a solution, they only way the community can offer insight into your specific problem will be for you to post your domain name, then we can lookup the details and try to offer additional guidance.