May 14th 2012
all servers are now upgraded to 1Gbit connections.

May 9th 2012
So your website has been hacked? #salvagemysite http://t.co/mOjhgegC

April 25th 2012
the cobalt platform is back up and running now.

April 25th 2012
we?re aware of an issue with cobalt. We?re investigating now.

You are here: Home » FAQ » SMTP Error Qmail 553

SMTP Error Qmail 553

Customers with SMTP receiving the following error from 3dpixelnet servers: 553 sorry, that domain is not in my list of allowed rcpthosts (#5.7.1) should ensure that all important details from the SMTP welcome emails are entered into the mail client. Such an error is a response from the server that the sender has not properly authenticated for SMTP.



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