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osted.com.<br><br>;; Query time: 0 msec<br>;; SERVER: 172.16.0.21#53(172.16.0.21)<br>;; WHEN: Mon Apr 19 12:33:57 EDT 2021<br>;; MSG SIZE  rcvd: 112<br><br>[root@account ~]# telnet mxb-00143702.gslb.pphosted.com 25<br>Trying 148.163.141.77...<br>Connected to mxb-00143702.gslb.pphosted.com.<br>Escape character is '^]'.<br>220 mx0b-00143702.pphosted.com ESMTP mfa-m0184889<br>helo rivervalleyinternet.net<br>250 mx0b-00143702.pphosted.com Hello [192.81.87.236], pleased to meet you<br>mail from:info@rivervalleyinternet.net<br>250 2.1.0 Sender ok<br>rcpt to:dr[redacted]@comcast.net<br>550 5.7.1 Relaying denied<br><br></div><br></div></body></html>