Reason: Remote host said: 601 Attempted to send the message to the following ip’s
Tuesday, December 24th, 2013An error containing Reason: Remote host said: 601 Attempted to send the message to the following ip’s is returned when SmarterMail is unable to connect to the recipients e-mail server and deliver the e-mail you attempted to send.
To resolve the issue, please contact the recipient via alternate methods and inform them of the above.
Typically this happens when the recipients mail server is offline, smtp traffic blocked by a firewall or the e-mail server not accepting connections on port 25.