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Also, found in log:</div>
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<span style="font-family: "Courier New", monospace;">Jan 13 12:49:32 orl-ar-openser01 /usr/sbin/kamailio[1313]: NOTICE: <script>: request_route() -> 72.31.12.137:5060 sent INVITE From: sip:2053140346;isub=33343@72.31.12.137 To: sip:16077751765@71.44.15.84:5060;user=phone
with PAI: sip:2053140340@67.9.220.145 CID: SDr1ra601-881f71e7d022d9c4ae64dfccd6ff916c-8q7og02</span></div>
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<span style="font-family: "Courier New", monospace;">Jan 13 12:49:32 orl-ar-openser01 /usr/sbin/kamailio[1316]: NOTICE: <script>: onreply_route() -> 65.32.14.217:5060 sent reply: 100 reason: Trying From: sip:2053140346@72.31.12.137
</span><span style="font-family: "Courier New", monospace; background-color: rgb(255, 255, 0);">To: <null></span><span style="font-family: "Courier New", monospace;"> for CID: SDr1ra601-881f71e7d022d9c4ae64dfccd6ff916c-8q7og02</span><br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> sr-users <sr-users-bounces@lists.kamailio.org> on behalf of AL S <alirsm2@outlook.com><br>
<b>Sent:</b> Thursday, January 14, 2021 8:57 AM<br>
<b>To:</b> Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org><br>
<b>Subject:</b> [SR-Users] To header being malformatted.</font>
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Hi,</div>
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<span style="font-family:Calibri,sans-serif; font-size:14.666666984558105px; font-weight:normal; orphans:auto; widows:auto; display:inline!important">We noticed an issue with the way the Kamailio is handling certain messages being sent to them, specifically,
the To header being relayed from Kamailio to the next hop is malformatted. </span><br>
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Any assistance is greatly appreciated<br>
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INVITE received by Kamailio:</div>
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<span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"> Request: Invite</span><br style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto">
<span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"> Request URI: sip:2053140346;isub=33343@72.31.12.137:5060;transport=udp</span><br style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto">
<span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"> From: <sip:+13037819601@71.44.15.84;user=phone>;tag=gK00a85927</span><br style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto">
<span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"> To: <sip:+12053140346@72.31.12.137>;tag=SDnpoa601-1c711123926</span><br style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto">
<span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"> Call-ID: SDnpoa601-f1bc387aa5a486c1dd943d1b53ae8e6a-8q7og02</span><br style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto">
<span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"> CSeq: 860668 INVITE</span><br style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto">
<span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"> Contact: <sip:+13037819601@107.14.122.29:5060></span><br style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto">
<span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"> SDP IP: 0.0.0.0</span><br style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto">
<span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"> SDP Port: 43126</span><br>
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<span style="background-color:rgb(255,255,255); display:inline!important">INVITE forwarded by Kamailio:</span><br>
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<span style="background-color:rgb(255,255,255); display:inline!important"><span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"> Request:
Invite</span><br style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto">
<span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"> Request URI: sip:2053140346;isub=33343@72.31.12.137:5060;transport=udp</span><br style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto">
<span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"> From: <sip:+13037819601@71.44.15.84;user=phone>;tag=gK00a85927</span><br style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto">
<span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"> </span><span style="font-family:monospace; font-size:11.7px; font-weight:normal; background-color:rgb(255,255,0); display:inline!important">To:
<sip:+120531403Oh.lc".3/+0]1..31.12.137>;tag=SDnpoa601-1c711123926</span><br style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto">
<span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"> Call-ID: SDnpoa601-f1bc387aa5a486c1dd943d1b53ae8e6a-8q7og02</span><br style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto">
<span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"> CSeq: 860668 INVITE</span><br style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto">
<span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"> Contact: <sip:+13037819601@107.14.122.29:5060></span><br style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto">
<span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"> SDP IP: 0.0.0.0</span><br style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto">
<span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"> SDP Port: 43126</span><br>
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<span style="background-color:rgb(255,255,255); display:inline!important"><span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"><br>
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Another example in BYE:</div>
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BYE <span style="background-color:rgb(255,255,255); display:inline!important">received by Kamailio:</span></div>
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<span style="background-color:rgb(255,255,255); display:inline!important; font-family:"Courier New",monospace">To: "WIRELESS CALLER" <sip:+18131111111@71.44.13.84>;tag=gK0a788ca6</span><span style="background-color:rgb(255,255,255); display:inline!important"><br>
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<span style="background-color:rgb(255,255,255); display:inline!important">BYE forwarded by Kamailio:</span></div>
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<span style="background-color:rgb(255,255,0); font-family:"Courier New",monospace">To: "WIRELESS CALLER" <sip:+18131112222A.++.+,-94</span><br>
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<span style="background-color:rgb(255,255,255); display:inline!important">Thanks.</span></div>
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<span style="background-color:rgb(255,255,255); display:inline!important">AL</span><br>
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<span style="background-color:rgb(255,255,255); display:inline!important"><span style="font-family:monospace; font-size:11.699999809265137px; font-weight:normal; orphans:auto; widows:auto; background-color:rgb(233,233,233); display:inline!important"></span></span></div>
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