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Part of Plusnet internet provider service blocked at outlook.com?

FIXED
Kryten
Rising Star
Posts: 67
Thanks: 16
Registered: ‎04-05-2015

Part of Plusnet internet provider service blocked at outlook.com?

I have been working for a client with an outlook.com email address and for the last 4 days my emails to him are being bounce back. The bounced email says it's a permanent error and my internet provider is having some parts of its service blocked. See below in red please. Any help much appreciated.

 

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

blablabla6@outlook.com
   host outlook-com.olc.protection.outlook.com [104.47.12.33]
   SMTP error from remote mail server after pipelined sending data block:
   550 5.7.1 Unfortunately, messages from [79.170.40.142] 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. [DB3EUR04FT050.eop-eur04.prod.protection.outlook.com]
Reporting-MTA: dns; mail142.extendcp.co.uk

Action: failed
Final-Recipient: rfc822;blablabla@outlook.com
Status: 5.0.0
Remote-MTA: dns; outlook-com.olc.protection.outlook.com
Diagnostic-Code: smtp; 550 5.7.1 Unfortunately, messages from [79.170.40.142] 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. [DB3EUR04FT050.eop-eur04.prod.protection.outlook.com]
Return-path: <blablabla@hfdesign.net>
Received: from 76.115.115.87.dyn.plus.net ([87.115.115.76] helo=[192.168.1.19])
    by mail142.extendcp.co.uk with esmtpsa (TLSv1:ECDHE-RSA-AES256-SHA:256)
    (Exim 4.92)
    id 1hSevj-0003Ya-Sr
    for blablabla@outlook.com; Mon, 20 May 2019 10:50:07 +0100
From: blablabla <blablabla@hfdesign.net>
Content-Type: multipart/alternative; boundary="Apple-Mail=_65A80991-270C-4D52-8375-3684A256CB1C"
Message-Id: <307F8038-562E-4BF6-B371-E3378F77E9DC@hfdesign.net>
Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\))
Subject: Re: ETLT
Date: Mon, 20 May 2019 10:50:03 +0100
References: <DB6PR0402MB2760D7B2CC94A3FDC3BC9712A42B0@DB6PR0402MB2760.eurprd04.prod.outlook.com> <46CEFCC7-F087-4DAF-B0A0-D1ACF96AA477@hfdesign.net> <DB6PR0402MB276050A4C17ABF87AA46E281A4200@DB6PR0402MB2760.eurprd04.prod.outlook.com> <E8A29928-A03E-415F-8CD3-7012E0B66B3E@hfdesign.net> <DB6PR0402MB27603060A94189A2968F4EB2A4200@DB6PR0402MB2760.eurprd04.prod.outlook.com> <240EC362-0BCC-4F09-9EA3-2A07A56E4A16@hfdesign.net> <DB6PR0402MB2760DCD1068A582D97C447E9A4390@DB6PR0402MB2760.eurprd04.prod.outlook.com> <F71AA451-713A-4928-87ED-4DAFA1063A62@hfdesign.net> <DB6PR0402MB2760A41BBB94172A3DC389F0A4390@DB6PR0402MB2760.eurprd04.prod.outlook.com> <256AD42D-08B6-4E8C-B2D8-AD48FE7A5315@hfdesign.net> <DB6PR0402MB2760447814F9EE964C4696D3A4390@DB6PR0402MB2760.eurprd04.prod.outlook.com> <9C67DA46-E151-40F1-99AB-07E246A1B9ED@hfdesign.net> <DB6PR0402MB27604B1CDD7C517816EADC4EA43A0@DB6PR0402MB2760.eurprd04.prod.outlook.com> <EF46DCDB-8E36-4488-BA07-A4514E628996@hfdesign.net> <DB6PR0402MB2760E6172E06A240A124968EA43A0@DB6PR0402MB2760.eurprd04.prod.outlook.com> <FAD4054F-65B4-4673-8796-5392849950D2@hfdesign.net> <DB6PR0402MB2760B4CF755946B71CF37D2EA43B0@DB6PR0402MB2760.eurprd04.prod.outlook.com> <EE799F3D-0DFC-473E-8A89-9CC726519A62@hfdesign.net> <DB6PR0402MB2760999741CC9CCC14AB4DFEA43B0@DB6PR0402MB2760.eurprd04.prod.outlook.com> <C8AC3860-2600-4CC2-BF52-8FA0A60D53A7@hfdesign.net> <DB6PR0402MB27602891034E175002AF390EA4360@DB6PR0402MB2760.eurprd04.prod.outlook.com> <F5BC0482-5E65-4637-BBB7-31FD3D261D47@hfdesign.net> <DB6PR0402MB27604A6D6689F9161554099CA4370@DB6PR0402MB2760.eurprd04.prod.outlook.com> <6AF4CE62-BDE7-4DF2-8EB0-4651AC0BDD9E@hfdesign.net> <DB6PR0402MB2760C1C373C4F2C7056D639DA4310@DB6PR0402MB2760.eurprd04.prod.outlook.com> <CFAF92ED-F52B-40FE-9597-5CC9BF845E28@hfdesign.net> <DB6PR0402MB2760795B24517FFB9EE528ACA40B0@DB6PR0402MB2760.eurprd04.prod.outlook.com> <1299A59A-50A8-474F-9250-5D20A6C7701A@hfdesign.net> <DB6PR0402MB276054936C2C33F135A11EAAA4040@DB6PR0402MB2760.eurprd04.prod.outlook.com>
To: blablabla <blablabla@outlook.com>
In-Reply-To: <DB6PR0402MB276054936C2C33F135A11EAAA4040@DB6PR0402MB2760.eurprd04.prod.outlook.com>
X-Mailer: Apple Mail (2.3124)
X-Spam-Score: 0.0
X-Exim-DSN-Information: Due to administrative limits only headers are returned

7 REPLIES 7
Highlighted
Superuser
Superuser
Posts: 7,563
Thanks: 1,372
Fixes: 88
Registered: ‎30-07-2007

Re: Part of Plusnet internet provider service blocked at outlook.com?

It looks like your email is being sent via mail142.extendcp.co.uk  rather than the PN mail servers. It seems like whatever that is , it's on a blacklist.

Kryten
Rising Star
Posts: 67
Thanks: 16
Registered: ‎04-05-2015

Re: Part of Plusnet internet provider service blocked at outlook.com?

Okay thanks MrW. I have my own domain and hosting so use my domain's mail servers. Does that mean it's that rather than PN?

Superuser
Superuser
Posts: 7,563
Thanks: 1,372
Fixes: 88
Registered: ‎30-07-2007

Re: Part of Plusnet internet provider service blocked at outlook.com?

Fix

Yes, you need to get  whoever hosts your domain to get their mail server off whatever blocklist outlook thinks it's on.

It doesn't appear to be anything to do with PN.

Kryten
Rising Star
Posts: 67
Thanks: 16
Registered: ‎04-05-2015

Re: Part of Plusnet internet provider service blocked at outlook.com?

Very helpful thanks MrW.

Superuser
Superuser
Posts: 7,563
Thanks: 1,372
Fixes: 88
Registered: ‎30-07-2007

Re: Part of Plusnet internet provider service blocked at outlook.com?

Do you have an spf record on your domain ? Not having an spf record that allows sending from the mail server in question is becoming a common reason for non-delivery of email

Kryten
Rising Star
Posts: 67
Thanks: 16
Registered: ‎04-05-2015

Re: Part of Plusnet internet provider service blocked at outlook.com?

Er, don't know. I will have to check on this MrW. I am in contact with my hosting provider to find out. Thanks for the tip squire.

Kryten
Rising Star
Posts: 67
Thanks: 16
Registered: ‎04-05-2015

Re: Part of Plusnet internet provider service blocked at outlook.com?

The problem has been sorted by changing the outgoing mail server in my client from mail.mydomain.com to mail54.extendcp.co.uk. It's a problem that has never occurred before but it's fixed now. I think before mail out was using mail142.extendcp.co.uk though my domain.

Thanks to all who helped, much appreciated.