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In the phone console logs, see that the phone attempts to query its local cache (127.0.0.1), prior to forwarding the query to the configured DNS server address. 0475 INF Mar 12 15:07:53.686410 dnsmasq[12864]: query[A] PUB11.brianw2.lab from 127.0.0.1 0476 INF Mar 12 15:07:53.686450 dnsmasq[12864]: forwarded PUB11.brianw2.lab to X.X.X.X 0477 INF Mar 12 15:07:53.694909 dnsmasq[12864]: forwarded PUB11.brianw2.lab to X.X.X.X 0478 INF Mar 12 15:07:53.695263 dnsmasq[12864]: reply PUB11.brianw2.lab is NXDOMAIN-IPv4 0479 INF Mar 12 15:07:53.695833 dnsmasq[12864]: query[A] PUB11.brianw2.lab from 127.0.0.1 0480 INF Mar 12 15:07:53.695865 dnsmasq[12864]: cached PUB11.brianw2.lab is NXDOMAIN-IPv4 0481 WRN Mar 12 15:07:53.697091 (12905:13036) JAVA-configmgr MQThread|NetUtil.traceIPv4DNSErrors:? - DNS ++ However, we see that the phone is not able to resolve the FQDN of the CUCM Publisher. This is because 0482 ERR Mar 12 15:07:53.697267 (12905:13036) JAVA-configmgr MQThread|cip.sec.TvsProperty:? - Failed to ++ Afterwards, we see the CAPF operation fail. This is expected because we do not have a DNS mapping fo 0632 NOT Mar 12 15:07:55.760715 (12905:13036) JAVA-configmgr MQThread|cip.sec.CertificateProperty:? - Ce 0633 NOT Mar 12 15:07:55.761649 (322:17812) SECUREAPP-RCAPF_START_MODE: Start CAPF - mode:[1]([NULL_STR] 0634 NOT Mar 12 15:07:55.761749 (322:17812) SECUREAPP-CAPF_CLNT_INIT:CAPF clnt initialized 0635 NOT Mar 12 15:07:55.761808 (322:17812) SECUREAPP-CAPFClnt: SetDelayTimer - set with value <0> 0636 ERR Mar 12 15:07:55.761903 (322:17812) SECUREAPP-Sec create BIO - invalid parameter. 0637 ERR Mar 12 15:07:55.761984 (322:17812) SECUREAPP-SEC_CAPF_BIO_F: CAPF create bio failed 0638 ERR Mar 12 15:07:55.762040 (322:17812) SECUREAPP-SEC_CAPF_OP_F: CAPF operation failed, ret -7 0639 CRT Mar 12 15:07:55.863826 (12905:13036) JAVA-configmgr MQThread|cip.sec.CertificateProperty$1:? - ++ What we would expect to see is something similar to the following where DNS replies with the IP addre 4288 INF Mar 12 16:34:06.162666 dnsmasq[12864]: query[A] PUB11.brianw2.lab from 127.0.0.1 4289 INF Mar 12 16:34:06.162826 dnsmasq[12864]: forwarded PUB11.brianw2.lab to X.X.X.X 4290 INF Mar 12 16:34:06.164908 dnsmasq[12864]: reply PUB11.brianw2.lab is X.X.X.X 4291 NOT Mar 12 16:34:06.165024 (12905:13036) JAVA-configmgr MQThread|cip.sec.TvsProperty:? - Resolve Tv See in the phone status messages that the phone is not able to resolve PUB11.brianw2.lab. Afterwards see the "LSC: Connection" failed message.