Forum Discussion
Girish_kumar
Jun 23, 2023Copper Contributor
DNS records for Exchange online
We have some critical application sending alert notification mails to a particular email domain. We have recently faced an issue where all the external domains were not reachable for an extended peri...
MathieuVandenHautte
Jun 25, 2023Steel Contributor
Hy Girish,
Regarding "Our environment consists of a collection of Azure VMs(Windows) inside an Azure VNET", please note that outbound SMTP connections using TCP port 25 are now blocked at the Vnet-level.
Regarding "Our environment consists of a collection of Azure VMs(Windows) inside an Azure VNET", please note that outbound SMTP connections using TCP port 25 are now blocked at the Vnet-level.