not able to send and recieve emails

[ayad]

hi

I have started to work in an email marketing company and i am facing with an issue.
One of our clients is not able to send and receive emails. Actually we are hosting the clients sub domain and he is not able to send and receive emails from the domain that is hosting it. Rest apart the client is able to send and receive emails normally accept to the mail hosting mail server.
I have listed the error :

This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed: abc@xyz.co.nz No Such User Here ------ This is a copy of the message, including all the headers. ------ ------ The body of the message is 384958 characters long; only the first ------ 106496 or so are included here. Return-path: Received: from pmlive by host2.example.co.nz with local (Exim 4.69) (envelope-from ) id


I have not provided the actually web adress.
host2.example.co.nz is the server that is hosting the subdomain xyz.co.nz.
plz help



regards
Ayad

[falko]

Did you create an email account for abc@xyz.co.nz on the server?
Does the MX record for xyz.co.nz point to the correct server?

[ayad]

thanks falko

ya the account has already been created, we have also confirmed from the ISP that the newsletter is
reaching to them (the ISP created a test account and we send a test newsletter n they verified that
they have recieved it).Apart from MX record can there be any other reason.

[falko]

If the MX record is correct, then there must be something wrong with the way you set up the mail account because it says "abc@xyz.co.nz No Such User Here"...

[ayad]

we have found that there is some problem with the MX records.
Thnks for help and suggestion

[ayad]

Hi there

Does any one have an idea how SPF (sender policy framework) works,
do we only need to authenticate the IP address from which we are sending emails or there is any thing else involved.
In our company we send emails from on behalf of our clients to their respective clients, the email address is used of the client itself and not of our company.
To implement the SPF do we need to authenticate only the IP address from which we are sending the emails or their is something else involved.

thanks