MX Values (Zoho mail for domain), Virtualmin, I can send email, cannot receive anything

MX Values (Zoho mail for domain), Virtualmin, I can send email, cannot receive anything

Hello

I've finished Domain Validation Process (Zoho Mail form Domains). I've finished configuration of MX, A, TXT values (virtualmin) and now i see that i can receive but i cannot send email from user@mydomain.com

Why ?

Here's what i'm using on my domain

$ttl 38400
@ IN SOA ns1.mydomain.com. root.ns1.mydomain.com. (
1370144528
10800
3600
604800
38400 )
@ IN NS ns1.mydomain.com.
@ IN NS ns2.mydomain.com.
mydomain.com. IN A 111.111.111.111
www.mydomain.com. IN A 111.111.111.111
ftp.mydomain.com. IN A 111.111.111.111
m.mydomain.com. IN A 111.111.111.111
ns1.mydomain.com. IN A 111.111.111.111
ns2.mydomain.com. IN A 111.111.111.111
localhost.mydomain.com. IN A 127.0.0.1
mail.mydomain.com. IN A 111.111.111.111
mydomain.com.        IN MX 10 mx.zohomail.com
mydomain.com.        IN MX 20 mx2.zohomail.com
mydomain.com.        IN TXT "v=spf1 mx include:zoho.com ~all"