I am sending out order confirmations using the the goDaddy smtp server 'relay-hosting.secureserver.net'. This has worked fine until recently.
Now, whenever a mail is sent to a user at 'googlemail.com' or 'gmx.com (or gmx.co.uk), the mail is rejected with the following message:
"The message was rejected because it contains prohibited virus or spam content"
Other mail providers such as 'hotmail' and 'btinternet' work fine and do not reject our mails.
I have even removed all links from the mail and written mail messages that look personal so as not to be seen as SPAM, but to no avail.
Does anyone know what could be causing these 2 mail providers to be rejecting messages from this server?
The following 2 lines show the port and server name:
smtp.Host = "relay-hosting.secureserver.net";
smtp.Port = 25;
I have contacted goDaddy but as usual they answer totally different questions to what you ask and so I'm just wondering if anyone has any ideas about this?