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GO to mxtoolbox and verify your exchange server public IP is blacklisted in any RBLs.<br><a href="https://mxtoolbox.com/blacklists.aspx" rel="ugc">https://mxtoolbox.com/blacklists.aspx</a>
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IT Manager

Jan Mishkin

Consultant

Alan

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If they are going to spam, you are not blacklisted. &nbsp;Blacklisting only applies to servers, not individuals anyway. &nbsp;Email clients can declare anything as spam. &nbsp;It could be a keyword match or too much images vs text. &nbsp;Do you have a Gmail account that you send to as part of your normal procedure? &nbsp;Does it go to the junk folder there?
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Principal Software Engineer

Dr. Klahn

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If you can view the header on an email that was sent to Junk or Spam, you should be able to sort out what caused it to be classified as such. &nbsp;You can either do that on the recipient's computer or have them forward the email to you as an attachment (not as a simple forward).
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You said, <b>&quot;Several of our clients have reported that our emails are going to spam today&quot;</b>.<br />
<br />
Then you aren't blacklisted.<br />
<br />
If you were blacklisted, no email would have arrived... to be classified as SPAM...<br />
<br />

<pre><code class="code-1 nolinks" id="code-20-43292977-1"><span>https://www.experts-exchange.com/questions/29215065/Need-to-minimize-risk-in-my-choices-of-a-CRM-Click-Funnels-Mail-Typeform-etc.html</span>
</code></pre>
 provides details about how to use the Port25 verifier... which will check your IPrev/SPF/DKIM settings, then return you a report of minimal fixes required... around 10% of the items required to have high delivery/inboxing...<br />
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Almost surely the problem is some or all of - broken SPF or DKIM or DMARC.<br />
<br />
There are many considerations to have high delivery/inboxing, which are unique to mail being sent.<br />
<br />
There are a few common requirements + many unique requirements.<br />
<br />
The real solution is do what you can, then if you still have problems find an Email Delivery Savant to analysis your entire mail flow.
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<i> We sent out a Campaigner bulk email on Friday but that shouldn't have caused an issue.</i><br />
<br />
It turns out that this is not the case.<br />
<br />
Sending out a bulk email campaign causes all the recipients' email receivers, and probably also their email clients, to readjust the spam scores for your domain. &nbsp;All links and email addresses in spam are parsed for where they go and to what domain. &nbsp;If the recipients have feedback spam filtering, the spam score may go up through the roof if, say, half a dozen people feedback &quot;This is spam.&quot;
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Fractional CTO

David Favor

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Suggestion: After you close this question, consider opening another question... something along the lines of...<br />
<br />
<b>&quot;Describe top reasons why email is classified as SPAM by Mailbox Providers&quot;</b>.
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I wanted to respond individually to all the comments but I don't see how I can do this anymore. &nbsp;So here is our status:<br><br>We still do not have a solution but all these comments have contributed greatly to our learning more about email. &nbsp;I asked last night for our people who had their emails sent to the recipient's Spam box to have them send the email as an attachment to me but have not gotten any responses, except, "how do we do that?". &nbsp;Even after sending directions, I am still waiting. &nbsp;The comments about DMARC brought us to a Microsoft page online that evaluates our MS 365 Security and that was very interesting and had links to many articles that seem appropriate. I will update this ticket as soon as we have some progress.
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Responding to&nbsp;<a href="https://www.experts-exchange.com/members/CompProbSolv.html" rel="ugc">CompProbSolv</a>&nbsp;<br>I got an email sent to me as an attachment. Here is the header. &nbsp;What am I looking for?<br>&nbsp;<a href="https://filedb.experts-exchange.com/incoming/2021/05_w22/1562178/cRc-email-header-that-went-to-spam.txt" rel="ugc">cRc-email-header-that-went-to-spam.txt</a><br><br>Thanks for any help, anyone can give.
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cRc-email-header-that-went-to-spam.txt

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In the given header we see.<br><pre><code class="code-1 nolinks" id="code-20-43294654-1"><span>From: Dovid Aronin  To: Avigail Soroka <a href="mailto:<xxxxxxxxxxxxka@gmail.comoka@gmail.com>" rel="ugc nofollow">&lt;xxxxxxxxxxxxka@gmail.comoka@gmail.com&gt;</a></span>
</code></pre><br>The From user <a rel="ugc nofollow" target="_blank">crckosher.org</a> is probably your domain user and this domain is in office 365. I mean mx is pointed to O365.<br><br>As per your original query "We sent out a Campaigner bulk email on Friday". If you are on office 365 or any users from your organization is sending bulk email probably As described in the <a href="https://docs.microsoft.com/en-us/office365/servicedescriptions/exchange-online-service-description/exchange-online-limits" rel="ugc">Exchange Online Service Description</a>, using EOP<br><br>There is a limit defined in O365 EOP for sending emails out otherwise you will be blocked by O365 EOP (Exchange Online Protection) spam filter.<br><br>using EOP to send bulk email is not a supported use of the service, and is only permitted on a "best-effort" basis. For customers who do want to send bulk email, we recommend the following solutions:<br><ul><li><strong>Send bulk email through on-premises email servers</strong>:</li><li><strong>Use a third-party bulk email provider</strong></li></ul><br>Also in the same header&nbsp;<pre><code class="code-1 nolinks" id="code-20-43294654-2"><span>x-microsoft-antispam: BCL:0</span>
</code></pre><br><table><thead><tr><th>BCL</th><th>Description</th></tr></thead><tbody><tr><td>0</td><td>The message isn't from a bulk sender.<br></td></tr></tbody></table><br>It is likely that Gmail might have caught these emails as spam. You can also whitelist your domain in Gmail.<br><br>Also your&nbsp;<pre><code class="code-1 nolinks" id="code-20-43294654-3"><span>x-originating-ip: [216.80.93.226]</span>
</code></pre>is not backlisted when I checked using mxtoolbox.<br><br><br><br><br><br>
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<div>
It turns out that none of the emails that went to Spam were from our bulk email send. I was just concerned that the bulk email sent through Campaigner may have caused our blacklisting which I now know is not the case. &nbsp;<br>Our CKO just told me he sent an email 3 times to someone yesterday or the day before and they all went to the person's Spam.<br>All the emails were sent via our Microsoft 365 accounts which is under the domain <a rel="ugc nofollow" target="_blank">cRcweb.org</a> with an alias of <a rel="ugc nofollow" target="_blank">cRcKosher.org</a>. &nbsp;Since we put in the alias well over a year ago there has not been a problem, except with Spiceworks. Thank you for checking the originating IP on the blacklists.<br>Any thoughts on what we need to do?
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<div>
You said, <b>&quot;We still do not have a solution but all these comments have contributed greatly to our learning more about email.&quot;</b><br />
<br />
And... <b>Any thoughts on what we need to do?</b><br />
<br />
Yes.<br />
<br />
Provide your actual domain name for testing.<br />
<br />
Better to test + know, than guess.<br />
<br />
Your best comments will come after you provide your actual domain (or host) for testing.
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<div>
Actual email domain name is <a rel="ugc nofollow" target="_blank">crcweb.org</a>&nbsp;but everyone in this division who is having issues is using the alias name of <a rel="ugc nofollow" target="_blank">crckosher.org</a>.<br>Thank you for asking.
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<div>
It is a Microsoft 365 hosted account.
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<div class="content wysiwyg-content fr-view">
Several of our clients have reported that our emails are going to spam today. &nbsp;How do I know if we are blacklisted? &nbsp;We sent out a Campaigner bulk email on Friday but that shouldn't have caused an issue. &nbsp;How do I know if we are blacklisted?<br>Many thanks,<br>Jan
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Several of our clients have reported that our emails are going to spam today.  How do I know if we are blacklisted?  We sent out a Campaigner bulk email on Friday but that shouldn't have caused an issue.  How do I know if we are blacklisted?
Many thanks,
Jan

how do i find out if email is blacklisted?

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.