I cannot send emails from outlook, I can only receive----HELP!

[marialamb]

Hello


I have 5 differnet accounts on my outlook 2010. Yesterday morning one of them stopped working. It would not send emails, just receive them.

At the same time my Iphone start haveing issues as well sending and now receiving them too.

msg form Outlook: Error from the server SMTP. Server respnded 451 please try again....
msg from Iphone the mail server "" is not responding. veryfy that you have entered the correct account info in mail settings

When I log in on CPanel I can send messages and it all works good...

They told me it's about port 25 that they are filtering and I should install port 26 or use ISP

I have zero clue about this and wondering why all the sudden all this issues....

furtermore...how Can I fix this?

Anyhelp is much appreciated....with baby steps istruction please




THank you

Maria
​

 

[cPanelMichael]

Hello

Sometimes ISPs will block SMTP access on port 25. You will need to contact your web hosting provider to see if they can enable port 26 or another port for sending email. If they can do that, you can configure your email client to use that alternate port for sending mail.

Thank you.