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550-Unrouteable address

2013-03-07 5:57 am EST

Hits: 13,547
My email messages to a Hostgater hosted account are returned with these error messages:
SMTP error from remote mail server after RCPT TO::
host []: 550-Verification failed for
550-Unrouteable address
550 Sender verify failed

I'm using as SMTP server and don't know of any problems sending to other addresses. What is the meaning of these error codes & how do I fix it?

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5,889 Points
2013-03-07 10:32 am EST
Thank you for your question RickP!

We looked at your domain and Hostgator still has your domain in their DNS server configuration. When you email from your on our server, when the email resolves at Hostgator, the Hostgator server sees your domain in their DNS as delivering email locally ( to the Hostgator server ); however, there is no email account at Hostgator so it gives the 550 no such user error.

The following NS look up from the Linux command line shows your domain still in their nameserver cluster.

<div style="margin-left:20px;"><strong>dig</strong>

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.6 <<>>
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 38873
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2
;; WARNING: recursion requested but not available

; IN A



;; ADDITIONAL SECTION: 14400 IN A 14400 IN A</div>

You will need to contact Hostgator or the person who had your domain at Hostgator and have them remove the domain from their DNS.

If your Domain was not in the Hostgator DNS cluster, you would get a "Not Found" when digging your domain at their nameservers like the following results:

<div style="margin-left:20px;">dig: couldn't get address for '': not found</div>
Unfortunately this is not the case. Sorry for the inconvenience. There is nothing we can do from our end.

Best Regards,
James R

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