Hello, we've had this issue for a while and have already exhausted trying to communicate directly with the receiving party. More often than not, they are clueless as to how to remove us from whatever list is being maintained that is blocking our emails and those who seem to have a bit of technical knowledge always claim that they have no control over it.
I've tried reaching out to my data center directly who has already tried to whitelist through other means without success so I am opening a ticket here (after several months of trying everything else) as a last resource.
Here is the blocked message. I am using *** to protect some of the email addresses here but happy to provide these privately if need be. I've also emailed this to the email that is being provided in different similar threads here but have not had a response.
The originating IP that is being blocked is: 107.174.26.221. This particular IP I have it exclusively assigned to a single customer so that I am not blocking the entire server. Here is the email log error:
Hello, this message is intended for your IT department or whoever handles your email service. We are a Web Hosting company and emails from our servers are being filtered / blocked by yours. As a consequence, legitimate communication from my clients to your servers are being rejected and thus why I've contacted you today. I am pasting below the actual error message so you can have your IT department troubleshoot and possibly remove us from such blockage.
Thanks!
The source IP address is: 107.174.26.221
LOG: MAIN
cwd=/usr/local/cpanel/whostmgr/docroot 4 args: /usr/sbin/exim -v -M 1ea0NW-00041X-4v
delivering 1ea0NW-00041X-4v
LOG: MAIN
Sender identification U=countsy5 D=countryclub.do S=***@countryclub.do
Connecting to cluster1.us.messagelabs.com [216.82.241.131]:25 from 107.174.26.221 ... connected
SMTP<< 501 Connection rejected by policy [7.7] 5405, please visit www.messagelabs.com/support for more details about this error message.
SMTP>> QUIT
SMTP(close)>>
LOG: MAIN
H=cluster1.us.messagelabs.com [216.82.241.131]: SMTP error from remote mail server after initial connection: 501 Connection rejected by policy [7.7] 5405, please visit www.messagelabs.com/support for more details about this error message.
Connecting to cluster1.us.messagelabs.com [216.82.249.179]:25 from 107.174.26.221 ... connected
SMTP<< 501 Connection rejected by policy [7.7] 4408, please visit www.messagelabs.com/support for more details about this error message.
SMTP>> QUIT
SMTP(close)>>
LOG: MAIN
H=cluster1.us.messagelabs.com [216.82.249.179]: SMTP error from remote mail server after initial connection: 501 Connection rejected by policy [7.7] 4408, please visit www.messagelabs.com/support for more details about this error message.
Connecting to cluster1.us.messagelabs.com [216.82.241.243]:25 from 107.174.26.221 ... connected
SMTP<< 501 Connection rejected by policy [7.7] 19209, please visit www.messagelabs.com/support for more details about this error message.
SMTP>> QUIT
SMTP(close)>>
LOG: MAIN
H=cluster1.us.messagelabs.com [216.82.241.243]: SMTP error from remote mail server after initial connection: 501 Connection rejected by policy [7.7] 19209, please visit www.messagelabs.com/support for more details about this error message.
Connecting to cluster1.us.messagelabs.com [216.82.249.211]:25 from 107.174.26.221 ... connected
SMTP<< 501 Connection rejected by policy [7.7] 5307, please visit www.messagelabs.com/support for more details about this error message.
SMTP>> QUIT
SMTP(close)>>
LOG: MAIN
H=cluster1.us.messagelabs.com [216.82.249.211]: SMTP error from remote mail server after initial connection: 501 Connection rejected by policy [7.7] 5307, please visit www.messagelabs.com/support for more details about this error message.
Connecting to cluster1.us.messagelabs.com [216.82.242.44]:25 from 107.174.26.221 ... connected
SMTP<< 501 Connection rejected by policy [7.7] 19704, please visit www.messagelabs.com/support for more details about this error message.
SMTP>> QUIT
SMTP(close)>>
LOG: MAIN
H=cluster1.us.messagelabs.com [216.82.242.44]: SMTP error from remote mail server after initial connection: 501 Connection rejected by policy [7.7] 19704, please visit www.messagelabs.com/support for more details about this error message.
Connecting to cluster1a.us.messagelabs.com [216.82.251.230]:25 from 107.174.26.221 ... connected
SMTP<< 220 server-13.tower-555.messagelabs.com ESMTP
SMTP>> EHLO mailserver.elatomo.com
SMTP<< 250-server-13.tower-555.messagelabs.com says EHLO to 107.174.26.221:46132
250-STARTTLS
250-PIPELINING
250 8BITMIME
SMTP>> STARTTLS
SMTP<< 220 2.0.0 continue
SMTP>> EHLO mailserver.elatomo.com
SMTP<< 250-server-13.tower-555.messagelabs.com says EHLO to 107.174.26.221:46132
250-PIPELINING
250 8BITMIME
SMTP>> MAIL FROM:<***@countryclub.do>
SMTP>> RCPT TO:<***@totalbank.com>
SMTP>> DATA
SMTP<< 250 2.0.0 MAIL FROM accepted
SMTP<< 421 Service Temporarily Unavailable
SMTP>> QUIT
SMTP(close)>>
LOG: MAIN
== ***@totalbank.com R=dkim_lookuphost T=dkim_remote_smtp defer (-44) H=cluster1a.us.messagelabs.com [216.82.251.230]: SMTP error from remote mail server after RCPT TO:<***@totalbank.com>: 421 Service Temporarily Unavailable