We can not send some mails
We didn't have any problem sending mails to one specific email address which is my shop owner, but since Feb 14th 2017 We cannot send mails but receive error mails instead.
We have checked recipient(shop owner) if their server blocked our email address, but they said no.
Could you please tell us what can cause this problem and how we can solve this situation?
Thank you
We have checked recipient(shop owner) if their server blocked our email address, but they said no.
Could you please tell us what can cause this problem and how we can solve this situation?
Thank you