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Hotmail blocked

FIXED
microfinch
Newbie
Posts: 4
Registered: ‎04-01-2008

Hotmail blocked

‎05-11-2022 1:14 PM

Hi there. I'm replying to a message from a hotmail account with a hotmail account and it's getting blocked:

 

550 5.7.1 Unfortunately, messages from [89.187.86.92] weren't sent.

Please contact your Internet service provider since part of their network is on our block list (S3150). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors.

[DB3EUR04FT012.eop-eur04.prod.protection.outlook.com]

haven't got time to wait on the phone to support!

thank you.

mike

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MisterW
Superuser
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Posts: 16,002
Thanks: 6,050
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Registered: ‎30-07-2007

Re: Hotmail blocked

‎05-11-2022 2:23 PM - edited ‎05-11-2022 2:23 PM

Yet another instance of incorrect use of the Spamhaus PB by outlook mail servers

From here https://www.spamhaus.org/faq/section/ISP%20Spam%20Issues

 

Should an ISP use the PBL to block their own users?
  No! Spurious blocking caused by sites using the Spamhaus PBL to block authenticated access to smarthosts or outgoing email servers is very bad. The PBL is only designed to be used on incoming email, i.e. on the hosts that your MX records point to.

If you use the same hosts for incoming email and smarthosting or outgoing email, then you should always ensure that you exempt authenticated clients from PBL checks. As your users are often on dynamic IP addresses, a user may be assigned an IP address from his provider that is in the PBL.

Another way of putting this is: "Do not use the PBL to block your own users".

Note: This also applies to using the PBL to deny access to web-forums, journals or blogs.

 

 

Superusers are not staff, but they do have a direct line of communication into the business in order to raise issues, concerns and feedback from the community.

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microfinch
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Posts: 4
Registered: ‎04-01-2008

Re: Hotmail blocked

‎05-11-2022 4:08 PM

hmmm. thanks very much. but not sure that's solving the issue?! i'm on a fixed IP anyway.

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MisterW
Superuser
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Re: Hotmail blocked

‎05-11-2022 5:08 PM

that IP listed is NOT a PlusNet IP, Its out1-typhoon.hostingseries.net.

Are you sending via another ISP mail server ?

Superusers are not staff, but they do have a direct line of communication into the business in order to raise issues, concerns and feedback from the community.

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microfinch
Newbie
Posts: 4
Registered: ‎04-01-2008

Re: Hotmail blocked

‎05-11-2022 5:51 PM

it's another domain provider. would it be best to use a plusnet mailserver for a domain that hosted elsewhere? not sure that'd work. or just sort it out with spamhaus? or get the domain host to sort it out?!!

 

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MisterW
Superuser
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Re: Hotmail blocked

Fix

‎05-11-2022 6:01 PM - edited ‎05-11-2022 6:01 PM

get the domain host to sort it out

that would be best

would it be best to use a plusnet mailserver for a domain that hosted elsewhere? not sure that'd work.

That will work providing you can change the SPF record for the domain, to include the plusnet mail srrvers

Superusers are not staff, but they do have a direct line of communication into the business in order to raise issues, concerns and feedback from the community.

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microfinch
Newbie
Posts: 4
Registered: ‎04-01-2008

Re: Hotmail blocked

‎05-11-2022 9:49 PM

yes, domain host fixed it. thanks very much for your help.

Mike

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