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Remote host said: 601 Attempted to send the message to the following IP
Problem reported by Simon Boo - May 22, 2014 at 12:05 AM
Submitted
Could not deliver message to the following recipient(s):
 
Failed Recipient: ericyeung@wmg-group.com.hk
Reason: Remote host said: 601 Attempted to send the message to the following ip's:
                116.251.204.147
Could not deliver message to the following recipient(s):
 
 

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1
Employee Replied
May 27, 2014 at 3:42 PM
Employee Post
601 is a generic error message.  An item to check is login to the server that SmarterMail is installed on and try to telnet to the IP address 116.251.204.147 and see if you get a 220 response.  If you do not this could be network related or the IP address your telneting from may be blocked on the receiving end.  If you can telnet verify if the IP address that SmarterMail is sending from is the same IP address you used when doing the test.
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Aleyant Replied
September 11, 2014 at 9:00 AM
I get this periodically, but on investigating the logs it is always mx.google.com (or one of its aliases) on the other end. I have been recommending that my domain users make sure our outgoing Smartermail server is in their SPF record.
 
Today I got it for our primary domain, which most definitely does have our outgoing server in its SPF record.  See this lengthy log extract:
http://pastebin.com/knNHa27L
 
I cannot find our outgoing IP on any blacklists; our rDNS and EHLO banner match the dns, mail7.aleyant.net. What else could cause google to reject this? And in such an unfriendly manner -- saying "Go ahead" and then disconnecting when we do?

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