Unable to forward email to Outlook server(Spam)

It's been more than a year. This server does not send spam and in main.cf(Postfix) it send a copy of all outgoing email to my email id. But Outlook does not accept it. Whether this specific IP is in Spam list or not I'm not sure.

Here : https://mxtoolbox.com/SuperTool.aspx?action=blacklist%3a172.105.35.227&run=toolpage it shows on UCEPROTECTL3 spam black list.

I'm confused what could be the problem.

mail.log snippet

Sep 21 00:44:07 host postfix/smtp[16678]: 664733EE1C: to=bhasnc@hotmail.com, relay=hotmail-com.olc.protection.outlook.com[]:25, delay=1.2, delays=0.01/0.01/0.96/0.2, dsn=5.7.1, status=bounced (host hotmail-com.olc.protection.outlook.com[] said: 550 5.7.1 Unfortunately, messages from [] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3140). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [BN1NAM02FT027.eop-nam02.prod.protection.outlook.com] (in reply to MAIL FROM command))
Sep 21 00:44:07 host postfix/smtp[16678]: 664733EE1C: lost connection with hotmail-com.olc.protection.outlook.com[104.47.

6 Replies

Have you filed an issue with Linode? I ran into this problem a few months back, and they intervened with Microsoft to get my IP address unblocked. It took maybe a day or two, and emails to Hotmail, Outlook.com, etc. have been delivered without a hitch since then.

Hello, same problem here. I can't seem to send emails to any MS/Outlook/Live/Hotmail/managed by MS accounts, Linode seems to be listed in UCEPROTECTL3.

Is there a way that someone from Linode have a look at this?

Today I've checked 4 Linode and 4 Digitalocean IPs. All blacklisted.

There is one Droplet which does not have a website even. Only Mysql server. Even it has been blacklisted!

Very bad days for us. We are helpless and we are getting screwed


Linode seems to be listed in UCEPROTECTL3.

Linode is always listed in UCEPROTECTL3! UCEPROTECT is an extortion racket. Also, M$ doesn't use it. See the following message threads:

-- sw

Use something like smtp2go.


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