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    <p>There can only be one SFP TXT record per domain. A complete
      record could look like.....</p>
    <p>domain1.com.      IN    TXT   "v=spf1 a:mail.domain1.com
      a:smtp.domain1.com a:relay.domain2.com -all"</p>
    <p>It should be logical to use a (domain) name because that name
      could have multiple IP addresses, both IPv4 and IPv6.<br>
      Note that there are double quotes around the whole TXT string as
      well.<br>
    </p>
    <div class="moz-cite-prefix">On 7/8/22 5:55 PM, Richard T.A. Neal
      wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CWLP123MB48043AEFDCF7B1FC4EA21191B3829@CWLP123MB4804.GBRP123.PROD.OUTLOOK.COM">
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        <p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hi
            Roberto,<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="mso-fareast-language:EN-US">You
            need to prefix it with “a:” to indicate that this is an
            A-record, i.e.:<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="mso-fareast-language:EN-US">a:relay.company.com<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="mso-fareast-language:EN-US">Best,<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal">Richard.<o:p></o:p></p>
        <p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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          1.0pt;padding:3.0pt 0cm 0cm 0cm">
          <p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span
              lang="EN-US"> bind-users
              <a class="moz-txt-link-rfc2396E" href="mailto:bind-users-bounces@lists.isc.org"><bind-users-bounces@lists.isc.org></a>
              <b>On Behalf Of </b>Greg Choules via bind-users<br>
              <b>Sent:</b> 08 July 2022 4:45 pm<br>
              <b>To:</b> Roberto Carna <a class="moz-txt-link-rfc2396E" href="mailto:robertocarna36@gmail.com"><robertocarna36@gmail.com></a><br>
              <b>Cc:</b> ML BIND Users <a class="moz-txt-link-rfc2396E" href="mailto:bind-users@lists.isc.org"><bind-users@lists.isc.org></a><br>
              <b>Subject:</b> Re: Can't modify an existing SPF record<o:p></o:p></span></p>
        </div>
        <p class="MsoNormal"><o:p> </o:p></p>
        <div>
          <p class="MsoNormal">Hi Roberto. What domain is this SPF for
            and exactly how are you trying to add the extra term?<o:p></o:p></p>
          <div>
            <p class="MsoNormal">Cheers, Greg<o:p></o:p></p>
          </div>
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        <p class="MsoNormal"><o:p> </o:p></p>
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          <div>
            <p class="MsoNormal">On Fri, 8 Jul 2022 at 16:38, Roberto
              Carna <<a href="mailto:robertocarna36@gmail.com"
                moz-do-not-send="true">robertocarna36@gmail.com</a>>
              wrote:<o:p></o:p></p>
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            6.0pt;margin-left:4.8pt;margin-right:0cm">
            <p class="MsoNormal">Dear, from my webmin interface for
              BIND9, I try to add an additional<br>
              allowed sender host to our SPF record, but I get the
              following error:<br>
              <br>
              Failed to save record : '<a
                href="http://relay.company.com" target="_blank"
                moz-do-not-send="true">relay.company.com</a>' is not a
              valid host to<br>
              allow sending from<br>
              <br>
              What does this mean? Do I have to consider some important
              thing I'm forgetting ?<br>
              <br>
              <a href="http://relay.company.com" target="_blank"
                moz-do-not-send="true">relay.company.com</a> is already
              defined in our public DNS, and it has a<br>
              reverse record too.<br>
              <br>
              if I add this record by hand, it's not replicated to the
              DNS slaves.<br>
              <br>
              Thanks in advance!!!<br>
              -- <br>
              Visit <a
                href="https://lists.isc.org/mailman/listinfo/bind-users"
                target="_blank" moz-do-not-send="true">
                https://lists.isc.org/mailman/listinfo/bind-users</a> to
              unsubscribe from this list<br>
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              support subscriptions. Contact us at
              <a href="https://www.isc.org/contact/" target="_blank"
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              <br>
              <br>
              bind-users mailing list<br>
              <a href="mailto:bind-users@lists.isc.org" target="_blank"
                moz-do-not-send="true">bind-users@lists.isc.org</a><br>
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                target="_blank" moz-do-not-send="true">https://lists.isc.org/mailman/listinfo/bind-users</a><o:p></o:p></p>
          </blockquote>
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    <div class="moz-signature">-- <br>
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      <p>Mark James ELKINS  -  Posix Systems - (South) Africa<br>
        <a class="moz-txt-link-abbreviated" href="mailto:mje@posix.co.za">mje@posix.co.za</a>       Tel: <a href="tel:+27826010496">+27.826010496</a><br>
        For fast, reliable, low cost Internet in ZA: <a
          href="https://ftth.posix.co.za">https://ftth.posix.co.za</a><br>
        <br>
        <img moz-do-not-send="false"
          src="cid:part10.8D983732.1F6E48B4@posix.co.za" alt="Posix
          Systems" width="250" height="165"><img moz-do-not-send="false"
          src="cid:part11.A268EF29.DB449148@posix.co.za" alt="VCARD for
          MJ Elkins" title="VCARD, Scan me please!" width="164"
          height="164"><br>
      </p>
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