501 Domain address required: EHLO

501 Domain address required: EHLO

Dear zoho,

I used this script http://hawkee.com/snippet/7372/ for many years with google SMTP.
This worked fine, but after I moved my email to zoho i receive this error.


S: 220 mx.zohomail.com SMTP Server ready May 28, 2015 12:48:52 AM PDT
C: EHLO
S:
S: 501 Domain address required: EHLO

What could cause this issue?

Kind regards,
Mathias