Message not delivered: The response from the remote server was: 550 High scoring spam message has been dropped, likely blacklist

[Flypr]

I have been getting a lot of calls from different clients that their emails are not being delivered to my company email and they get this message in response:
```
Message not delivered

There was a problem delivering your message to ...@[mycompany]. See the technical details below, or try resending in a few minutes.

The response from the remote server was:
550 High scoring spam message has been dropped, likely blacklist
```

How can I solve this issue, is it from my server, is it from me? or is it just a problem from the senders?

I have access to direct admin, but I don't know where to look, please help!

 

[Flypr]

I have been getting a lot of calls from different clients that their emails are not being delivered to my company email and they get this message in response:
```
Message not delivered

There was a problem delivering your message to ...@[mycompany]. See the technical details below, or try resending in a few minutes.

The response from the remote server was:
550 High scoring spam message has been dropped, likely blacklist
```

How can I solve this issue, is it from my server, is it from me? or is it just a problem from the senders?

I have access to direct admin, but I don't know where to look, please help!

...also I tested with my personal gmail account to send an email to the same email I got the reported error from, and it worked.

I also checked my SpamAssassin Setup and I found this setting configuration:

Blocking strategy
Where should the spam go?

Delete - (checked)
Remove the spam from the server automatically

Could this be the problem?

 

[LawsHosting]

Check the main server IP against spam lists

 

[Flypr]

Check the main server IP against spam lists

I don't have a spam list, only blacklisted emails, but the ones that were blocked and returned are not on the list

 

[Active8]

The response from the remote server was:
550 High scoring spam message has been dropped, likely blacklist

Its more likely your customer is on blacklist and not you, your server drops the mail as far I can see

 

[Richard G]

from different clients that their emails

Different clients from the same server or different clients from different servers?

If it's different clients from different servers, it's possible that their ip's are no blacklists indeed.

550 High scoring spam message has been dropped, likely blacklist

Is that everything, nothing more? Normally some additional info is given.
If not, check your Exim logfiles, maybe you can see more there.

But still most likely it's spamlists.

 

[Flypr]

Different clients from the same server or different clients from different servers?

If it's different clients from different servers, it's possible that their ip's are no blacklists indeed.


Is that everything, nothing more? Normally some additional info is given.
If not, check your Exim logfiles, maybe you can see more there.

But still most likely it's spamlists.

I've attached a screen shot from one of my clients.

Also it is different clients from different servers, not same server. Also I realized, usually the emails they are sending from are from Gmail.

 

[Richard G]

You have to look at your Exim log at the same time and see if you can find more information there.

Next to that, your mail system is not optimal. You are not using an FQDN hostname for your server but a domain name. That's not advisable anyway.
It probably might not cause this issue, but it's a point of consideration.