<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>aquark</author><text>We&amp;#x27;ve run into this issue with replies to texts that the user sent first.&lt;p&gt;Telecom spam filtering seems to be a ridiculously primitive and wide net.  I can&amp;#x27;t imagine a valid use case for dropping a text sent to a number when that number just sent you a text a few seconds before.&lt;p&gt;I don&amp;#x27;t understand why SMS spam has such a big issue with false positives compared to email spam when emails are practically free to send but SMS is much more costly.&lt;p&gt;(Yes, I know there are a lot of false positives on email too ... but we run into false positive SMS spam issues a lot even though it feels like it should be a much simpler problem to solve).</text><parent_chain><item><author>duskwuff</author><text>You&amp;#x27;d be getting an unbelievable amount of SMS spam if carriers weren&amp;#x27;t allowed to block messages. There&amp;#x27;s a &lt;i&gt;lot&lt;/i&gt; of bad actors out there.</text></item><item><author>krono</author><text>Blocking of messages&amp;#x2F;emails and blanket email server&amp;#x2F;domain&amp;#x2F;extension blacklisting is the same as a postal service not delivering mail to or from a particular entity&amp;#x2F;street&amp;#x2F;town.&lt;p&gt;Doing so silently and without a valid and case-specific reason should not be legally allowed.&lt;p&gt;Edit: Added &amp;quot;street&amp;#x2F;town&amp;quot; to analogy, and &amp;quot;case-specific&amp;quot; before reason</text></item><item><author>humanistbot</author><text>&amp;gt; One surprising side effect of having a .xyz domain is that the mere inclusion of .xyz inside of a text message will result in a silent delivery failure for many providers.&lt;p&gt;This is wild to me. Tested it out myself and I couldn&amp;#x27;t send an SMS with a spot.xyz link to&amp;#x2F;from Google Voice &amp;lt;-&amp;gt; T-Mobile. And no &amp;quot;failed delivery&amp;quot; notice either, just a silent failure. And yet I still get so many texts that are obviously spam or phishing attempts.</text></item></parent_chain></comment><story><title>The Perils of an .xyz Domain</title><url>https://www.spotvirtual.com/blog/the-perils-of-an-xyz-domain/</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>skrtskrt</author><text>Seconded, having worked in this space I can assure everyone that there are multiple orders of magnitude more (attempted) spam SMS than legitimate SMS.</text><parent_chain><item><author>duskwuff</author><text>You&amp;#x27;d be getting an unbelievable amount of SMS spam if carriers weren&amp;#x27;t allowed to block messages. There&amp;#x27;s a &lt;i&gt;lot&lt;/i&gt; of bad actors out there.</text></item><item><author>krono</author><text>Blocking of messages&amp;#x2F;emails and blanket email server&amp;#x2F;domain&amp;#x2F;extension blacklisting is the same as a postal service not delivering mail to or from a particular entity&amp;#x2F;street&amp;#x2F;town.&lt;p&gt;Doing so silently and without a valid and case-specific reason should not be legally allowed.&lt;p&gt;Edit: Added &amp;quot;street&amp;#x2F;town&amp;quot; to analogy, and &amp;quot;case-specific&amp;quot; before reason</text></item><item><author>humanistbot</author><text>&amp;gt; One surprising side effect of having a .xyz domain is that the mere inclusion of .xyz inside of a text message will result in a silent delivery failure for many providers.&lt;p&gt;This is wild to me. Tested it out myself and I couldn&amp;#x27;t send an SMS with a spot.xyz link to&amp;#x2F;from Google Voice &amp;lt;-&amp;gt; T-Mobile. And no &amp;quot;failed delivery&amp;quot; notice either, just a silent failure. And yet I still get so many texts that are obviously spam or phishing attempts.</text></item></parent_chain></comment><story><title>The Perils of an .xyz Domain</title><url>https://www.spotvirtual.com/blog/the-perils-of-an-xyz-domain/</url></story>