Can't send some emails: 550 Sender is not allowed

[serendipityrose]

I have had this happen to two companies that I have tried to send emails to. The first one informed me that it was a problem with my host or email. I wasn't too worried about it until it happened again. I need to be able to depend on my website email to go through Has anyone else had a problem with this? I'm wondering if it some setting I have done or if I need to contact bluehost about it.

Here's the full failure notice:

Hi. This is the qmail-send program at outbound-mail-38.bluehost.com.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<email@example.com>:
Connected to 216.119.106.127 but sender was rejected.
Remote host said: 550 Sender is not allowed.

--- Enclosed are the original headers of the message.

There were no attachments, images or text that could have been a problem. In the first instance I tried multiple times in case it was a temporary thing. They were able to email me but I couldn't email them. Later they supposedly emailed me at the same address with an invoice but I never got it. I don't know if it was returned to them or not. They sent it to my personal email but that may not always be a good solution.

Thanks for any input.

Rose

[charlesgan]

Remote host said: 550 Sender is not allowed.

try email from webmail.. if it work, means your email client (outlook etc) is not setup properly. double check setting

it might be due to IP banning cause of spam originating from the server. which is the last cause. if you think this is the cause, you should contact support.

[serendipityrose]

Thanks Charles, I only use webmail, so that's not it. I will contact support.