Message Delivery Failure

Raise/discuss any potential issues with MailEnable for consideration in project issue register.
Post Reply
Posts: 1
Joined: Fri Jan 13, 2023 2:18 pm

Message Delivery Failure

Post by nycguy87 » Fri Jan 13, 2023 2:23 pm

Hello MailEnable community forums, can someone kindly assist to see what/where did I go wrong. I set up my mail enable and for whatever reason I am getting this error when sending out email. " Reason: 553 5.7.2 [TSS09 "

When I check my diagnostic I am getting a failure on SPF record. " No SPF record found for *MYDOMAIN*. (DNS_ERROR_RCODE_NAME_ERROR) - DNS Zone/Domain could not be found.

I've went ahead and triple checked that the record is there from my DNS registrant. My ISP is Verizon. Any help will be greatly appreciated.

Site Admin
Posts: 944
Joined: Mon Jun 10, 2002 6:31 pm
Location: Melbourne, Victoria, Australia

Re: Message Delivery Failure

Post by Admin » Tue Jan 17, 2023 4:14 am


Is this to Yahoo? The TSS09 error when sending to Yahoo generally means they have blocked your IP address:

Check the SMTP Debug log to see for TSS09 and see if there is more information. The Yahoo link above has information on how to help deliverability to them. You should have an SPF record and DKIM configured for the domain you are sending from as well.

Post Reply