One of the EA’s reported that an email was not going through to the CEO from a vendor\/partner and the NDR was:<\/p>\n
Generating server: myemailserver.tld
\nCEO@mycompany.tld
\n#< #5.1.0 smtp;554 5.1.0 Sender denied<\/strong>> #SMTP#
\nOriginal message headers:
\nReceived: from spam.myemailserver.tld (8.8.33.145) by mail.myemailserver.tld
\n (192.168.100.3) with Microsoft SMTP Server id 14.3.361.1; Mon, 18 Sep 2017
\n 22:25:26 -0500
\nX-Note: Xit Build: 3\/21\/2017 2:04:32 PM UTC (2.6.15.0) XIT_SCAN_PASSED
\nReceived: from [10.60.1.167] (HELO inbound.spamprovider.com) by
\n spam.myemailserver.tld (CommuniGate Pro SMTP 6.1.7) with ESMTP id 51998793;
\n Mon, 18 Sep 2017 23:25:26 -0400
\nX-Note: This Email was scanned by SomeProduct SPAMThing
\nX-Note-AR-ScanTimeLocal: 09\/18\/2017 11:25:26 PM
\nX-Note: SomeProduct Build: 8\/31\/2017 11:17:18 AM UTC (2.6.21.34)
\nX-Note: Filtered by 10.60.1.167
\nX-Policy: mycompany.tld
\nX-Primary: OtherUser@Mycompany.tld
\nX-Virus-Scan: V-
\nX-Note: SPF: IP: 167.31.17.139 DOM: VENDOREMAIL.TLD ADDR: partner@VENDOREMAIL.TLD
\nX-Note: SPF: Pass<\/p><\/blockquote>\nSo we notice that it went through from an SPF range – and I cut out the back and forth accepting of the message that normally comes with the NDR\/DR – and left the “554 5.1.0 Sender Denied” portion (bolded above).<\/p>\n
Since we run Exchange I could check using powershell for exchange. Go figure.<\/p>\n
Trusted Senders List<\/strong>
\n$TSD = (Get-MailboxJunkEmailConfiguration -Identity MYCEO_User).TrustedSendersAndDomains<\/code>
\n$TSD > c:\\temp\\Trusted_Senders.txt<\/code><\/p>\nBlocked Senders List<\/strong>
\n$TSD = (Get-MailboxJunkEmailConfiguration -Identity alan.handley).TrustedSendersAndDomains<\/code>
\n$TSD > c:\\temp\\Blocked_senders.txt<\/code><\/p>\nI should note that I first tried:
\nGet-MailboxJunkEmailConfiguration -ResultSize unlimited MYCEO_User > c:\\temp\\results.txt<\/code>
\nBut with that it was still truncating the results. Meh.<\/p>\nRemove an Entry<\/strong>
\nSet-MailboxJunkEmailConfiguration -Identity MYUSER -BlockedSendersAndDomains @{Remove=\"vendor@partner.tld\"}<\/code><\/p>\nAdd an Entry<\/strong>
\nSet-MailboxJunkEmailConfiguration -Identity ANOTHERUSER -TrustedSendersAndDomains @{Add=\"Vendor@partner.tld\"}<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"One of the EA’s reported that an email was not going through to the CEO from a vendor\/partner and the NDR was: Generating server: myemailserver.tld CEO@mycompany.tld #< #5.1.0 smtp;554 5.1.0 Sender denied> #SMTP# Original message headers: Received: from spam.myemailserver.tld (8.8.33.145) by mail.myemailserver.tld (192.168.100.3) with Microsoft SMTP Server id 14.3.361.1; Mon, 18 Sep 2017 22:25:26 -0500 … Continue reading List Trusted and Blocked Senders for Exchange User<\/span>