Sending emails problem with Plesk 10.2

[VicenteS]

Hi!

I'm having problems sending some emails, i'm getting this error:

Sorry, I couldn't find a mail exchanger or IP address. (#5.4.4)

I've tested the destination server with http://intodns.com and I know they have their server missconfigured

MX CNAME Check WARNING: CNAME was returned for the following MX records:
mail.gruposdm.com
The CNAME(s) that were returned are listed above. This is not ok per the RFCs and can cause problems including mail being lost!

Error MX A request returns CNAME WARNING: MX records points to a CNAME. CNAMEs are not allowed in MX records, according to RFC974, RFC1034 3.6.2, RFC1912 2.4, and RFC2181 10.3. The problem MX record(s) are:
mail.gruposdm.com points to ['i02.atnova.net']
This can cause problems

I was able to send them emails without a problem and after upgrading the issue appears.

I've tested with other server with plesk 10.1 and I can send it well.

Plesk 10.2 (or the new version of qmail) is very strict with RFCs. Are there any way to change this?

Thanks