SPF Fail - showing wrong IP

[Dom Walton]

I am using the plugin to send HTML emails, with a plain text version, and it works great. However I checked the headers of the mail messages and there is something wrong.

 

I am connecting to the SMTP server with:

EmailConnectSMTP( "mail.mouthulcers.co.uk" )

 

However in the mail header I see

Received-SPF: fail (mail5.ukisp.com: SPF record at mouthulcers.co.uk does not designate 62.105.160.41 as permitted sender)
 

In this case mail5.ukisp.com  and 62.105.160.41 are the host and IP of the SMTP server associated with the email address to which the message was sent, not  the one for mail.mouthulcers.co.uk which is 80.175.48.51

 

The EmailConnect is returning success (all of it returns success), it is as if the EmailConnect is being forgotten and the message is being sent via the recipients server!

 

Any ideas?