I have opened several mail adresess. I can send mails to gmail, hotmail etc. But some mail that like corporate mail I can not get from them. and also I can not send. Mail returning to me.
What should be the possible problem about it?
I have opened several mail adresess. I can send mails to gmail, hotmail etc. But some mail that like corporate mail I can not get from them. and also I can not send. Mail returning to me.
What should be the possible problem about it?