SMTP error from remote mail server after end of data: 550 [TPH-1556] - Message is rejected due to filtering restrictions

Jeromero

Active Member
Aug 6, 2019
25
3
3
Johannesburg , South Africa
cPanel Access Level
Website Owner
Hello everybody.
One of my clients is getting this error when he tries to send an email to a client of his:
"SMTP error from remote mail server after end of data: 550 [TPH-1556] - Message is rejected due to filtering restrictions"
Both domains (sender/receiver) are not blacklisted.
What the error might mean?
 

cPanelLauren

Product Owner
Staff member
Nov 14, 2017
13,296
1,252
313
Houston
This is a filter imposed (i'd assume on the recipient server) - some part of the email your client is sending is triggering the filter to bounce the email back to you. Since you according to your profile you're a website owner you won't have access to the exim mail logs but if you could add the information available at cPanel>>Email>>Track Delivery the (i) image under Actions should provide Delivery Event Details which would be helpful.
 

cPanelLauren

Product Owner
Staff member
Nov 14, 2017
13,296
1,252
313
Houston
Hello,

That confirms my theory, the recipient server is rejecting your client's email as a result of email filtering they have in place there. The only way around this is to send mail from a domain that doesn't trigger their filter or request they make an allowance for the domain.