Re: Problems with microsoft mail addresses

On 2023-01-02, J.O. Aho <[email protected]> wrote:
> On 14/06/2022 21.44, William Unruh wrote:
>> Microsoft has decided that My machine is for some reason dangerous, and
>> refuses to accept mail for any microsoft type address (eg msn.com,
>> hotmail.com,...). I certainly have not engaged in spamming anyone, or
>> any of the other "bad things" and neither has my machine. They of course
>> refuse to tell me why they are blackballing me.
>
> Microsoft don't look at individual IP's, they look at IP-span from the 
> same network provider, so if one or more IP-numbers have sent too much 
> spam in a time frame, then the whole span will be blocked.
>
> The owner of the IP address (usually your hosting company) has to 
> request that your IP will be cleared. Can nowadays be done from: 
> https://sendersupport.olc.protection.outlook.com/snds/

My IP is "NOT LISTED" and Listing risk "LOW"
So, that ain't it.


>
> For looking at the status of your IP and the IP-span you belong to, check:
> http://www.uceprotect.net/en/rblcheck.php
> If UCE Protect flags your span to send out a lot of spam, then you will 
> be more than likely blocked at microsoft's mail service.
>
>
>
>> Since we have friends who use microsoft mail addresses, this makes it
>> almost impossible to get mail to them, and we cannot ask them all to
>> change to some more reasonable mail address.
>
> You could use a smarter host to send to microsoft, you should talk a bit 
> with your hosting company, so that you can use their mail server as a 
> smarter host.

What is a "smarter host"?
As far as I know, my IP is the only one that has trouble. 

>
> Not sure how to configure this in postfix.
>
>
>> Is there some way of rewriting the headers so that the mail appears to
>> come from another machine, eg, the one pointed to by our return address,
>> instead of the machine the mail is actuall coming from.
>
> Yeah, but will not help you due of spf record for domains, will just 
> make you look more like a spammer.
>