I tranfered my DNS to MonsterCommerce monday evening. I set up an email account which is the same as the one I used at my previous hosting company (for example, my_name@mycompany.com).
Now any email sending to my_name@mycompany.com will go to

's mail server, ie. I receive email at MC's mail server. But I can NOT SEND out email from my

's email control panel.
Instead, I can send out email from OutLook where SMTP and POP3 are configured to my previous hosting company mail server (webmail.register.com).
In short, my new

mail server can receive emails sending to my_name@mycompany.com, but can not send. My old mail server can not receive email send to my_name@mycompany.com, but it can send email out successfully.
Is this due to the domain transfer, and will be temporary? Or it's going to be a problem? Did you ever run into such problem?
Thank you