title: Hard Error: SMTP -> FROM SERVER:421 Unexpected failure, please try later
body: <p>I look lots of solution pages but I can't solve this problem.I don't understand why happened this,because everything is perfect when I use it yesterday.Please help me :(</p>
  
  <p>Note: I only a webpage admin,not server admin</p>
  
  <p>!!!! You can see my codes and download here --> <a href="http://s2.dosya.tc/server/6vnkfc/codes.rar.html" rel="nofollow">http://s2.dosya.tc/server/6vnkfc/codes.rar.html</a></p>
  
  <p>My logs:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>SMTP -&gt; get_lines(): $data was "" 
  SMTP -&gt; get_lines(): $str is "220-nserver75.emikrondns.com ESMTP Exim 4.87 #1 Tue, 14 Jun 2016 00:22:22 +0300 " 
  SMTP -&gt; get_lines(): $data is "220-nserver75.emikrondns.com ESMTP Exim 4.87 #1 Tue, 14 Jun 2016 00:22:22 +0300 " 
  SMTP -&gt; get_lines(): $data was "220-nserver75.emikrondns.com ESMTP Exim 4.87 #1 Tue, 14 Jun 2016 00:22:22 +0300 " 
  SMTP -&gt; get_lines(): $str is "220-We do not authorize the use of this system to transport unsolicited, " 
  SMTP -&gt; get_lines(): $data is "220-nserver75.emikrondns.com ESMTP Exim 4.87 #1 Tue, 14 Jun 2016 00:22:22 +0300 220-We do not authorize the use of this system to transport unsolicited, " 
  SMTP -&gt; get_lines(): $data was "220-nserver75.emikrondns.com ESMTP Exim 4.87 #1 Tue, 14 Jun 2016 00:22:22 +0300 220-We do not authorize the use of this system to transport unsolicited, " 
  SMTP -&gt; get_lines(): $str is "220 and/or bulk e-mail. " 
  SMTP -&gt; get_lines(): $data is "220-nserver75.emikrondns.com ESMTP Exim 4.87 #1 Tue, 14 Jun 2016 00:22:22 +0300 220-We do not authorize the use of this system to transport unsolicited, 220 and/or bulk e-mail. " 
  SMTP -&gt; FROM SERVER:220-nserver75.emikrondns.com ESMTP Exim 4.87 #1 Tue, 14 Jun 2016 00:22:22 +0300 220-We do not authorize the use of this system to transport unsolicited, 220 and/or bulk e-mail. 
  SMTP -&gt; get_lines(): $data was "" 
  SMTP -&gt; get_lines(): $str is "250-nserver75.emikrondns.com Hello gorselsozluk.com [37.247.96.230] " 
  SMTP -&gt; get_lines(): $data is "250-nserver75.emikrondns.com Hello gorselsozluk.com [37.247.96.230] " 
  SMTP -&gt; get_lines(): $data was "250-nserver75.emikrondns.com Hello gorselsozluk.com [37.247.96.230] " 
  SMTP -&gt; get_lines(): $str is "250-SIZE 52428800 " 
  SMTP -&gt; get_lines(): $data is "250-nserver75.emikrondns.com Hello gorselsozluk.com [37.247.96.230] 250-SIZE 52428800 " 
  SMTP -&gt; get_lines(): $data was "250-nserver75.emikrondns.com Hello gorselsozluk.com [37.247.96.230] 250-SIZE 52428800 " 
  SMTP -&gt; get_lines(): $str is "250-8BITMIME " 
  SMTP -&gt; get_lines(): $data is "250-nserver75.emikrondns.com Hello gorselsozluk.com [37.247.96.230] 250-SIZE 52428800 250-8BITMIME " 
  SMTP -&gt; get_lines(): $data was "250-nserver75.emikrondns.com Hello gorselsozluk.com [37.247.96.230] 250-SIZE 52428800 250-8BITMIME " 
  SMTP -&gt; get_lines(): $str is "250-PIPELINING " 
  SMTP -&gt; get_lines(): $data is "250-nserver75.emikrondns.com Hello gorselsozluk.com [37.247.96.230] 250-SIZE 52428800 250-8BITMIME 250-PIPELINING " 
  SMTP -&gt; get_lines(): $data was "250-nserver75.emikrondns.com Hello gorselsozluk.com [37.247.96.230] 250-SIZE 52428800 250-8BITMIME 250-PIPELINING " 
  SMTP -&gt; get_lines(): $str is "250-AUTH PLAIN LOGIN " 
  SMTP -&gt; get_lines(): $data is "250-nserver75.emikrondns.com Hello gorselsozluk.com [37.247.96.230] 250-SIZE 52428800 250-8BITMIME 250-PIPELINING 250-AUTH PLAIN LOGIN " 
  SMTP -&gt; get_lines(): $data was "250-nserver75.emikrondns.com Hello gorselsozluk.com [37.247.96.230] 250-SIZE 52428800 250-8BITMIME 250-PIPELINING 250-AUTH PLAIN LOGIN " 
  SMTP -&gt; get_lines(): $str is "250 HELP " 
  SMTP -&gt; get_lines(): $data is "250-nserver75.emikrondns.com Hello gorselsozluk.com [37.247.96.230] 250-SIZE 52428800 250-8BITMIME 250-PIPELINING 250-AUTH PLAIN LOGIN 250 HELP " 
  SMTP -&gt; FROM SERVER: 250-nserver75.emikrondns.com Hello gorselsozluk.com [37.247.96.230] 250-SIZE 52428800 250-8BITMIME 250-PIPELINING 250-AUTH PLAIN LOGIN 250 HELP 
  SMTP -&gt; get_lines(): $data was "" 
  SMTP -&gt; get_lines(): $str is "334 VXNlcm5hbWU6 " 
  SMTP -&gt; get_lines(): $data is "334 VXNlcm5hbWU6 " 
  SMTP -&gt; get_lines(): $data was "" 
  SMTP -&gt; get_lines(): $str is "334 UGFzc3dvcmQ6 " 
  SMTP -&gt; get_lines(): $data is "334 UGFzc3dvcmQ6 " 
  SMTP -&gt; get_lines(): $data was "" 
  SMTP -&gt; get_lines(): $str is "235 Authentication succeeded " 
  SMTP -&gt; get_lines(): $data is "235 Authentication succeeded " 
  SMTP -&gt; get_lines(): $data was "" 
  SMTP -&gt; get_lines(): $str is "250 OK " 
  SMTP -&gt; get_lines(): $data is "250 OK " 
  SMTP -&gt; FROM SERVER:250 OK 
  SMTP -&gt; get_lines(): $data was "" 
  SMTP -&gt; get_lines(): $str is "250 Accepted " 
  SMTP -&gt; get_lines(): $data is "250 Accepted " 
  SMTP -&gt; FROM SERVER:250 Accepted 
  SMTP -&gt; get_lines(): $data was "" 
  SMTP -&gt; get_lines(): $str is "354 Enter message, ending with "." on a line by itself " 
  SMTP -&gt; get_lines(): $data is "354 Enter message, ending with "." on a line by itself " 
  SMTP -&gt; FROM SERVER:354 Enter message, ending with "." on a line by itself 
  SMTP -&gt; get_lines(): $data was "" 
  SMTP -&gt; get_lines(): $str is "421 Unexpected failure, please try later " 
  SMTP -&gt; get_lines(): $data is "421 Unexpected failure, please try later " 
  SMTP -&gt; FROM SERVER:421 Unexpected failure, please try later 
  SMTP -&gt; ERROR: DATA not accepted from server: 421 Unexpected failure, please try later 
  SMTP Error: Data not accepted.</code></pre>
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