Emails getting blocked by Spamcop

Have you had a Bounced email that reads like this

secureitfg.com rejected your message to the following email addresses:

Person you are sending to (email address) Your message couldn't be delivered because it's suspected of being spam. For best practices when sending email, refer to the guidelines found here: https://aka.ms/EmailingBestPractices.

secureitfg.com gave this error:

Decision Engine classified the mail item was rejected because of IP Block (from outbound normal IP pools) -> 554 5.7.1 Service unavailable; Client host [40.107.107.99] blocked using bl.spamcop.net; Blocked - see https://www.spamcop.net/bl.shtml?40.107.107.99

FatGalah's Mail server uses SPAMCOP to check for IPs listed as Spam or Backlisted, our server will block any IP in the list. This is its normal operation.

What does this mean. That the person sending the email to clients on Fatgalah's mail server, have been blocked. The person sending the email, will need to contact they server provider to resolve the issue.

You can use the tools below to check the status and provider of the IP address being blocked.

We have had a number of clients reporting issues with FatGalah's server blocking email addresses.

After our team and my Server tech team investigating the issue we have found the following.

All the IP addresses from the senders of the email, were from Microsoft's IP range from 40.107.107.90 to 40.107.107.125 to date. Although some have already been automatically removed from Spamcop's Blacklist, there are still some listed.

All of these IP addresses had or are still Blacklisted in SPAMCOP database.

Tools for check IP addresses

In each tool, put the IP address that is being blocked.

To find the source of the IP address getting block https://www.abuseipdb.com/ This will tell you the owner of the IP address.

sample: https://www.abuseipdb.com/check/40.107.107.99

To check the blacklists https://mxtoolbox.com/blacklists.aspx

To check if your IP is Blacklisted. Sample. https://mxtoolbox.com/SuperTool.aspx?action=blacklist%3a40.107.107.99&run=toolpage

To check SpamCop https://www.spamcop.net/bl.shtml

Sample - https://www.spamcop.net/w3m?action=checkblock&ip=40.107.107.99

If you have a different IP, please use these tools to check if your IP address has been Blacklisted.

To assist our clients while they automatically get removed or if Microsoft remove the IPs from the blacklist, we have setup a temp measure to let the emails through.