Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > alt.comp.mail.postfix > #495

Re: Problems with microsoft mail addresses

Show all headers | View raw

On 03/01/2023 06.49, William Unruh wrote:
> On 2023-01-02, J.O. Aho <user@example.net> 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.

Now it can be a while ago and no one has whitelisted the IP-span for 
Microsoft will not whitelist anyone automatically.

I suggest you take a look at "DETAILS ABOUT ALL ABUSER IP's LISTED IN 
LEVEL 1 AND THEIR IMPACTS CAN BE FOUND HERE!" at UCE Protect, which you 
find further down on the result page. Sure UCE and Microsoft ain't the 
same, but usually you can use UCE to figure out which hosts are fucking 
things for you.


>> 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"?

You can configure a smart host for your mailserver, so that all mail is 
sent over a mail relay, in sendmail this can only be done for all mail, 
not sure if postfix has the option to do this on domain base level, but 
to relay all mail you would configure something like:

smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous
smtp_sasl_tls_security_options = noanonymous
smtp_tls_security_level = encrypt
header_size_limit = 4096000
relayhost = [relay-smtp.example.com]:587

the sasl_passwd should look like

[relay-smtp.exmaple.com]:587 yourSMTPUsername:yourSMTPPassword

of course you need to add the relay server in the spf record or else 
those mails would bounce back. The MX records should be unchanged, as 
you want still handle your incoming mail as the smart host will not do 
it for you.

And, no you can't use which ever old email address you have for this, 
you need a host that has been setup as a relay, it do not be hosted by 
your hosting company, but they tend to have services for their customers.


> As far as I know, my IP is the only one that has trouble.

How do you know that? you talked with the person who has the IP+1 or IP-1?

Also, did you setup a correct spf for your mail domain, you have MX 
record for your mail domain, setup dmarc and share your dkim public key 
and then of course sign all outgoing mail?

-- 
  //Aho

Back to alt.comp.mail.postfix | Previous | Next — Previous in thread | Find similar

Thread

Problems with microsoft mail addresses William Unruh <unruh@invalid.ca> - 2022-06-14 19:44 +0000
  Re: Problems with microsoft mail addresses KIKI <yeir@pemfuh.uu> - 2022-06-14 23:35 +0200
  Re: Problems with microsoft mail addresses Ellenor Agnes Bjornsdottir <zerda@umbrellix.net> - 2022-10-18 07:23 +0000
    Re: Problems with microsoft mail addresses William Unruh <unruh@invalid.ca> - 2022-10-18 19:26 +0000
      Re: Problems with microsoft mail addresses Ellenor Agnes Bjornsdottir <zerda@umbrellix.net> - 2022-11-16 10:10 +0000
  Re: Problems with microsoft mail addresses "J.O. Aho" <user@example.net> - 2023-01-03 00:20 +0100
    Re: Problems with microsoft mail addresses William Unruh <unruh@invalid.ca> - 2023-01-03 05:49 +0000
      Re: Problems with microsoft mail addresses "J.O. Aho" <user@example.net> - 2023-01-03 10:25 +0100

csiph-web