I'm using Mandrillapp (mandrillapp.com) to send emails on my website. It works when I send emails to other services (e.g. gmail). Currently there are options to customize the sender domain. I am getting the following results which I suspect are incorrect:
Return Path Domain: mandrillapp.com
Zoho will correctly display my email in the inbox folder.
Return Path Domain: emailer.jurisflex.com
Zoho will place the email in the spam folder.
Basically Zoho's spam filtering seems to not like CNAMEs which is the standard way to customize emailers (reference here:
http://help.mandrill.com/entries/23353682-Can-I-customize-the-domain-used-for-open-and-click-tracking-
)
I also opened a support ticket with Mandrillapp who confirms that my SPF record is set correctly, which can be confirmed here:
You'll notice that the SPF record for Mandrill v=spf1 include:spf.mandrillapp.com ?all is already in place for your return-path. Also, by sending to a Gmail domain for example, or another domain that is not managed by Zoho mail, you'll notice that using your return path will result in the the SPF authentication passing successfully.
Any idea on what is going on?
Thanks,
Nicolas