Plesk / SmarterMail mail SPF problems

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
We are having a number of emails bounceback to use with various errors -

"Failed Recipient: ##@######
Reason: Remote host said: 550 5.7.1 <##@###>: Sender address rejected: Please see : Reason: mechanism"

"Could not deliver message to the following recipient(s):

Failed Recipient: ##@###
Reason: Remote host said: 550 5.7.1 <##@###>:
Recipient address rejected: for more information please visit"

and a few more.

This is happening with all email accounts on each domain on our server and our hosting suppliers are not being much help in solving this -

This is what our hosting suppliers said
"A DNS test for the shows that no SPF record exists. As the DNS nameservers for the domain are, we are unable to view or assist in correcting this issue.

An online DNS propagation tool shows that nameserver records and WWW Host A records exist for the domain, but the TXT record used in SPF is not publicly available. This appears to be a configuration error as no sites return any values. Propagation is not under way at the test sites we used.

Please review the configuration of this TXT record at your DNS nameserver provider."

We need someone to help configure about 10 domains with the same problem.

Skills required:
DNS, Plesk
About the employer:
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