1

Topic: issue when send mail to live/hotmail account

==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.6.3
- Deployed with iRedMail downloadable installer
- Linux/BSD distribution name and version: Debian 11.7
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MYSQL
- Web server (Apache or Nginx): NGINX
- Manage mail accounts with iRedAdmin-Pro? YES
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

hi all,
i have an issue with all mail sended to live/hotmail account...

i get 550 5.7.1 error...

here the response from mail sent from postmaster@mydomain to my personal live.com mail:

This is the mail system at host mail1.rixxxx.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<lxxxxxx@live.com>: host live-com.olc.protection.outlook.com[104.47.56.161]
    said: 550 5.7.1 Unfortunately, messages from [185.xx.xx.xx] 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.
    [CO1NAM11FT104.eop-nam11.prod.protection.outlook.com
    2024-02-07T07:28:24.896Z 08DC268B578C15A5] (in reply to MAIL FROM command)
Reporting-MTA: dns; mail1.rixxxx.com
X-Postfix-Queue-ID: 4TVBYL4yzTz2ZR6Q
X-Postfix-Sender: rfc822; postmaster@rixxxx.com
Arrival-Date: Wed,  7 Feb 2024 08:28:22 +0100 (CET)

Final-Recipient: rfc822; lxxxxx@live.com
Original-Recipient: rfc822;lxxxxx@live.com
Action: failed
Status: 5.7.1
Remote-MTA: dns; live-com.olc.protection.outlook.com
Diagnostic-Code: smtp; 550 5.7.1 Unfortunately, messages from [185.xx.xx.xx]
    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.
    [CO1NAM11FT104.eop-nam11.prod.protection.outlook.com
    2024-02-07T07:28:24.896Z 08DC268B578C15A5]

i have already follow all instructions from microsoft, but even if unlock domain from https://sender.office.com after few days

anyone have any idea how to solve the problem.
i have already contact microsoft support and here is their answer:

Nothing was detected to prevent your mail from reaching Outlook.com customers. Please follow the instructions below.

Still need help?

If you have additional questions or still experiencing deliverability issues or want further investigation, please reply to this email with the following information and an advocate will respond to you by via email.

    Relevant IP addresses(es)
    Detailed description of the problem you are having
    specific error message(s)

Recommended actions and resources to improve your deliverability:
Maintaining or improving a good IP reputation requires vigilance and oversight with no fail-safe remedy. Please refer to this link for more information Outlook.com Postmaster


Thanks again,

Outlook.com Deliverability Support

i need to solve this problem, but talk with microsoft is similar to talk with a bot...

----

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2

Re: issue when send mail to live/hotmail account

luciono wrote:
This is the mail system at host mail1.rixxxx.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<lxxxxxx@live.com>: host live-com.olc.protection.outlook.com[104.47.56.161]
    said: 550 5.7.1 Unfortunately, messages from [185.xx.xx.xx] 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.
    [CO1NAM11FT104.eop-nam11.prod.protection.outlook.com
    2024-02-07T07:28:24.896Z 08DC268B578C15A5] (in reply to MAIL FROM command)
Reporting-MTA: dns; mail1.rixxxx.com
X-Postfix-Queue-ID: 4TVBYL4yzTz2ZR6Q
X-Postfix-Sender: rfc822; postmaster@rixxxx.com
Arrival-Date: Wed,  7 Feb 2024 08:28:22 +0100 (CET)

Final-Recipient: rfc822; lxxxxx@live.com
Original-Recipient: rfc822;lxxxxx@live.com
Action: failed
Status: 5.7.1
Remote-MTA: dns; live-com.olc.protection.outlook.com
Diagnostic-Code: smtp; 550 5.7.1 Unfortunately, messages from [185.xx.xx.xx]
    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.
    [CO1NAM11FT104.eop-nam11.prod.protection.outlook.com
    2024-02-07T07:28:24.896Z 08DC268B578C15A5]

i have already follow all instructions from microsoft, but even if unlock domain from https://sender.office.com after few days

anyone have any idea how to solve the problem.
i have already contact microsoft support and here is their answer:

Nothing was detected to prevent your mail from reaching Outlook.com customers. Please follow the instructions below.

Still need help?

If you have additional questions or still experiencing deliverability issues or want further investigation, please reply to this email with the following information and an advocate will respond to you by via email.

    Relevant IP addresses(es)
    Detailed description of the problem you are having
    specific error message(s)

Recommended actions and resources to improve your deliverability:
Maintaining or improving a good IP reputation requires vigilance and oversight with no fail-safe remedy. Please refer to this link for more information Outlook.com Postmaster


Thanks again,

Outlook.com Deliverability Support

i need to solve this problem, but talk with microsoft is similar to talk with a bot...

do you have own ip addresses block (/24 or greater), or get smaller block/single IP from provider? Error text says that block set on subnet, not on single IP.

3

Re: issue when send mail to live/hotmail account

thanks for answer,
i have already send a ticket with all subnet (/24) but get same answer from microsoft sad

here is their answer:

Hello,
 
Thank you for contacting the Outlook.com Deliverability Support Team.

I do not see anything offhand with the IP’s
(185.xx.xx.[0-161]; 185.xx.xx.[163-255]) that would be preventing your mail from reaching our customers. 

You may be able to find additional information on common delivery questions at the Outlook.com Postmaster Site.