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<font face="Helvetica, Arial, sans-serif">Hi Fred,<br>
<br>
550 5.7.1 means that the client's spam protection rejected the
email for some reason. You can contact the person either via
phone/text or using a separate email account to let them know
their system is rejecting your email. <br>
</font><br>
<font face="Helvetica, Arial, sans-serif"><a
href="https://docs.microsoft.com/en-us/office365/troubleshoot/antispam/message-rejected-ndr">https://docs.microsoft.com/en-us/office365/troubleshoot/antispam/message-rejected-ndr</a><br>
<br>
<blockquote type="cite">
<p style="box-sizing: inherit; margin: 1rem 0px 0px; padding:
0px; outline-color: inherit; overflow-wrap: break-word; color:
rgb(23, 23, 23); font-family: "Segoe UI", SegoeUI,
"Segoe WP", "Helvetica Neue", Helvetica,
Tahoma, Arial, sans-serif; font-size: 16px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps:
normal; font-weight: 400; letter-spacing: normal; orphans: 2;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255); text-decoration-style: initial;
text-decoration-color: initial;">The sender has probably
landed on a third-party anti-spam product's signature list.
This may be caused by nonstandard email practices such as a
failure to audit mailing lists. Recipients of these email
messages have previously submitted those email messages as
spam to their anti-spam product vendor. The vendor then added
an identifier that's unique to the sender to its anti-spam
definitions. It's this identifier that's now blocking the
email.</p>
<p style="box-sizing: inherit; margin: 1rem 0px 0px; padding:
0px; outline-color: inherit; overflow-wrap: break-word; color:
rgb(23, 23, 23); font-family: "Segoe UI", SegoeUI,
"Segoe WP", "Helvetica Neue", Helvetica,
Tahoma, Arial, sans-serif; font-size: 16px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps:
normal; font-weight: 400; letter-spacing: normal; orphans: 2;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255); text-decoration-style: initial;
text-decoration-color: initial;">Most frequently, the
detection is triggered by something in the email signature.
This might be a URL, domain name, or telephone number.</p>
<p style="box-sizing: inherit; margin: 1rem 0px 0px; padding:
0px; outline-color: inherit; overflow-wrap: break-word; color:
rgb(23, 23, 23); font-family: "Segoe UI", SegoeUI,
"Segoe WP", "Helvetica Neue", Helvetica,
Tahoma, Arial, sans-serif; font-size: 16px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps:
normal; font-weight: 400; letter-spacing: normal; orphans: 2;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255); text-decoration-style: initial;
text-decoration-color: initial;">We recommend that you confirm
the cause by sending a test email message to the same
recipient after you completely remove the signature. If the
email message is delivered without issue, you can confirm that
a component or characteristic of the signature is causing the
blocked email.</p>
</blockquote>
<br>
</font>
<div class="moz-signature">Best,<br>
Sam<br>
<br>
<hr size="1">
Sam McClellan<br>
<strong>Itabix, Inc</strong><br>
<i>One place for all things Web</i><br>
<a class="moz-txt-link-abbreviated" href="mailto:sam@itabix.com">sam@itabix.com</a><br>
<a class="moz-txt-link-freetext" href="https://itabix.com">https://itabix.com</a><br>
Main - 413.587.4600<br>
Toll-free - 877-7ITABIX (877.748.2249) <br>
<br>
</div>
<div class="moz-cite-prefix">On 5/27/2020 11:16 AM, Fred Levine via
Hidden-discuss wrote:<br>
</div>
<blockquote type="cite"
cite="mid:C383A1CF-AB31-4BA1-9BE7-FFFA028F297B@smallbatchbooks.com">
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<p class="MsoNormal"><span style="font-size:11.0pt">I’m
wondering if anyone can shed light on this error message
(Outlook for Mac):<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:-webkit-standard;color:black"> host
mx2.hc3579-74.iphmx.com [139.138.58.193]<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:-webkit-standard;color:black"> SMTP
error from remote mail server after DATA:<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:-webkit-standard;color:black"> 550
#5.7.1 Your access to submit messages to this e-mail system
has been rejected<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I’ve sent
multiple messages to the same address with no problem.
Suddenly they’re being rejected.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Fred<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Fred Levine<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Small Batch
Books<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">493 S.
Pleasant St.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Amherst, MA
01002<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">413.230.3943<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
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