Hello.
If the IP is one that you manage, you can submit a de-listing request
with Microsoft. However, this process might take 3-5 business days to
complete.
See:
https://sender.office.com/
They usually ask for the a copy of the bounced reply.
Otherwise, you might need to use a commercial service to get your
messages delivered, such as mailersend, sendgrid etc.
On 10/15/2022 8:03 PM, Linux Guy wrote:
though the sender IP is not listed in any RBL, outlook still blocks it.
do you know how can I deal with this?
thanks & regards.
