Forum Discussion
jcasqueiro
May 17, 2020Brass Contributor
O365 | Not able to receive emails
Hi I have just been added as an admin for a O365 tenant and noticed that: * The domain (re-food.org) is listed and I am able to create users * I am able to send email from user@re-food.org but but...
- May 17, 2020
Your MX record is currently pointed to;
This is obviously not Office 365. To find out the MX record you require to route your emails to O365, you need to click on the domain in the M365 admin center at https://admin,microsoft.com and click on Settings > Domains. Choose your domain in the list and then click Check DNS. Here you will find the required MX and other DNS records which are required for your domain to enable functionality in M365, and you will see which records are present and correct, and which are missing and need to be added.
Please be sure that you don't need to leave the MX records as they are for any reason though. MX records are not to be changed lightly.
Dr_A_Wells
May 20, 2020Copper Contributor
Gerv is correct. Unless you using something like mimecast for extra protection then you need to have the mx record pointing to mimecast instead.
You also need to check that your spf record has the correct sending IPs /or domains in it. For office 365 that is normally
include:spf.protection.outlook.com
other record you need are
Record Type Host Points to TTL
CNAME (Alias) autodiscover autodiscover.outlook.com 1 hour
CNAME (Alias) lyncdiscover webdir.online.lync.com 1 hour
CNAME (Alias) sip sipdir.online.lync.com 1 hour
and
Record Type Name Target Protocol Service Priority Weight Port TTL
SRV (Service) @ sipdir.online.lync.com _tls _sip 100 1 443 1 hour
SRV (Service) @ sipfed.online.lync.com _tcp _sipfederationtls 100 1 5061 1 hour
You also need to check that your spf record has the correct sending IPs /or domains in it. For office 365 that is normally
include:spf.protection.outlook.com
other record you need are
Record Type Host Points to TTL
CNAME (Alias) autodiscover autodiscover.outlook.com 1 hour
CNAME (Alias) lyncdiscover webdir.online.lync.com 1 hour
CNAME (Alias) sip sipdir.online.lync.com 1 hour
and
Record Type Name Target Protocol Service Priority Weight Port TTL
SRV (Service) @ sipdir.online.lync.com _tls _sip 100 1 443 1 hour
SRV (Service) @ sipfed.online.lync.com _tcp _sipfederationtls 100 1 5061 1 hour