We have an IP that gets bounces for no reason (501 Connection refused).
IP in question is 5.255.90.177.
It is not listed on any other blacklists (except ZabBL which blocks whole ranges but does not block email and is solely a mere opinion of varied system administrators). Neither does it have poor reputation with Symantec AFAIK.
Prompt unblock will be appreciated, we do not send unsolicited bulk mail from this e-mail address, solely legitimate e-mail traffic.
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host cluster5.eu.messagelabs.com [85.158.136.83]
SMTP error from remote mail server after initial connection:
501 Connection rejected by policy [7.7] 3610, please visit www.messagelabs.com/support for more details about this error message.
host cluster5.eu.messagelabs.com [85.158.136.83]
SMTP error from remote mail server after initial connection:
501 Connection rejected by policy [7.7] 3610, please visit www.messagelabs.com/support for more details about this error message.
host cluster5.eu.messagelabs.com [85.158.136.83]
SMTP error from remote mail server after initial connection:
501 Connection rejected by policy [7.7] 3610, please visit www.messagelabs.com/support for more details about this error message.