20005:20190923:100724.071 === Backtrace: ===
 20005:20190923:100724.072 21: /usr/sbin/zabbix_server: alerter #2 started(zbx_backtrace+0x42) [0x55e506c6a680]
 20005:20190923:100724.072 20: /usr/sbin/zabbix_server: alerter #2 started(zbx_log_fatal_info+0x151) [0x55e506c6a8fe]
 20005:20190923:100724.072 19: /usr/sbin/zabbix_server: alerter #2 started(+0x100c96) [0x55e506c6ac96]
 20005:20190923:100724.072 18: /lib64/libpthread.so.0(+0xf5f0) [0x7f5e6744a5f0]
 20005:20190923:100724.072 17: /lib64/libnss3.so(PK11_DigestOp+0x1f) [0x7f5e61aa325f]
 20005:20190923:100724.072 16: /lib64/libcurl.so.4(+0x43eaa) [0x7f5e64b50eaa]
 20005:20190923:100724.072 15: /lib64/libcurl.so.4(+0x4fe99) [0x7f5e64b5ce99]
 20005:20190923:100724.072 14: /lib64/libcurl.so.4(+0x49ce8) [0x7f5e64b56ce8]
 20005:20190923:100724.072 13: /lib64/libcurl.so.4(+0x48a2e) [0x7f5e64b55a2e]
 20005:20190923:100724.072 12: /lib64/libcurl.so.4(+0x33638) [0x7f5e64b40638]
 20005:20190923:100724.072 11: /lib64/libcurl.so.4(curl_multi_perform+0xd1) [0x7f5e64b41551]
 20005:20190923:100724.072 10: /lib64/libcurl.so.4(curl_easy_perform+0xf3) [0x7f5e64b38763]
 20005:20190923:100724.072 9: /usr/sbin/zabbix_server: alerter #2 started(+0x11196f) [0x55e506c7b96f]
 20005:20190923:100724.072 8: /usr/sbin/zabbix_server: alerter #2 started(send_email+0x22c) [0x55e506c7bce6]
 20005:20190923:100724.072 7: /usr/sbin/zabbix_server: alerter #2 started(+0x3b6f1) [0x55e506ba56f1]
 20005:20190923:100724.072 6: /usr/sbin/zabbix_server: alerter #2 started(alerter_thread+0x396) [0x55e506ba5f9d]
 20005:20190923:100724.073 5: /usr/sbin/zabbix_server: alerter #2 started(zbx_thread_start+0x37) [0x55e506c77f7b]
 20005:20190923:100724.073 4: /usr/sbin/zabbix_server: alerter #2 started(MAIN_ZABBIX_ENTRY+0xb94) [0x55e506ba4e12]
 20005:20190923:100724.073 3: /usr/sbin/zabbix_server: alerter #2 started(daemon_start+0x2f6) [0x55e506c69eae]
 20005:20190923:100724.073 2: /usr/sbin/zabbix_server: alerter #2 started(main+0x312) [0x55e506ba427c]
 20005:20190923:100724.073 1: /lib64/libc.so.6(__libc_start_main+0xf5) [0x7f5e640d0505]
 20005:20190923:100724.073 0: /usr/sbin/zabbix_server: alerter #2 started(+0x393a9) [0x55e506ba33a9]