Forum Discussion
Your message couldn't be delivered because the recipient's email server (outside Office 365) suspect
Hi, issue has lasted for months already. First i thought issue was on gmail side (when i tried to reply to emails which were sent from @gmail.com) , but now i discovered that i can`t reply to 90%...
Please you can fill out the form, it will definitely be a step that will clarify whether you are on the list of blocked senders, but you will not receive a response immediately it may take a while.
https://sender.office.com/
Hi,
but my issue has nothing to do with it, as in most of the cases I`m trying to send email outside Office365..
"If you're trying to send mail to an Office 365 recipient and the mail has been rejected because of your sending IP address, follow these steps to submit a delisting request."
but my issue has nothing to do with it, as in most of the cases I`m trying to send email outside Office365..
"If you're trying to send mail to an Office 365 recipient and the mail has been rejected because of your sending IP address, follow these steps to submit a delisting request."
In that case, it is not Microsoft blocking, please check the DNS lists, but I will not share the link, only general information.
https://en.wikipedia.org/wiki/Domain_Name_System-based_blocklist