Hello,
the last few days all our mail to Symantec customers returns bounced.
Other mail system problem ('553', ['Message filtered. Refer to the Troubleshooting page at', 'http://www.symanteccloud.com/troubleshooting for more', 'information. (#5.7.1)']
I've checked our IP addresses (134.221.1.26 and 134.221.1.27) against many blacklists, and they are OK.
When testing using telnet it seems messages with Received: headers are rejected
250 ok 1500986338 qp 11317 server-6.tower-184.messagelabs.com!1500986119!124095661!4
MAIL FROM:
250 OK
RCPT TO:
250 OK
Data
354 go ahead
Received: from exc-cashub01.tsn.tno.nl (HELO mail.tno.nl) ([134.221.225.220]) by mailhost1a.tno.nl with ESMTP; 25 Jul 2017 10:59:11 +0200
Received: from EXC-MBX02.tsn.tno.nl ([fe80::5836:4645:c512:f964]) by EXC-CASHUB01.tsn.tno.nl ([fe80::b855:be6:1aa8:4d0f%13]) with mapi id 14.03.0319.002; Tue, 25 Jul 2017 10:59:12 +0200
Subject:test
test
.
553-Message filtered. Refer to the Troubleshooting page at
553-http://www.symanteccloud.com/troubleshooting for more
553 information. (#5.7.1)
Same message without the Received headers is accepted.
Can somebody please explain how to fix this
Thanks,
Jacco