I have Exchange 2013 running on Server 2012. It has started to reject quite a lot of inbound emails. I collect them with EFS on the same server and send them via SMTP. EFS shows that the emails are rejected - it doesn't say why. Some of these are regular text emails - nothing odd about them. If I send an email from my gmail it always works. Other emails work. In an ideal world I would like all emails to appear in my exchange mailbox - I will worry about filtering spam and virus content.
Why is Exchange rejecting the emails and is there a way to tell it to pass all emails through?
At request here is the header from a rejected email
Return-Path: <email@example.com> Received: from ws-mail1.companieshouse.gov.uk (ws-mail1.companieshouse.gov.uk [22.214.171.124]) by mail.softsyshosting.com with SMTP; Sat, 14 Oct 2017 04:29:29 -0600 Reply-to: firstname.lastname@example.org Subject: (CS01) Confirmation statement received for XXXXXXXXXXX XXXXXXX Date: Sat, 14 Oct 2017 11:29:04 +0100 Message-ID: <CHCOMM.3047917614.3049232551.XXXXXX@companies-house.gov.uk> MIME-Version: 1.0 Content-type: multipart/mixed; boundary="Message-Boundary-by-Mail-Sender-1507976943" X-SmarterMail-Spam: SPF_Pass, HostKarma - Whitelist, ISpamAssassin 0 [raw: 0], DK_None, DKIM_None X-SmarterMail-TotalSpamWeight: -6 X-Forwarder: Redirected by EFS, http://www.chimeracomputing.com/ To: email@example.com From: Companies House <firstname.lastname@example.org>