I just discovered that my mail server being down causes a boot loop on our 7200 system.
The last events in the alarm show this

Quote
MJE33 10/24/2019 18:04:41 RTG Restart C1-MP
MJA04 11/20/2019 09:30:28 MCP Reset Watchdog
MNF38 11/20/2019 09:30:28 Card Active C1-S01
MNF38 11/20/2019 09:30:28 Card Active C1-S03
MNF38 11/20/2019 09:30:28 Card Active C1-S04
MNF38 11/20/2019 09:30:28 Card Active C1-S05
MJA05 11/20/2019 09:30:28 LCP Restart CABINET:1
MJE01 11/20/2019 09:30:28 MGI Restart C1-MP
MJE10 11/20/2019 09:30:28 SVMi Restart C1-MP
MNF33 11/20/2019 09:30:28 SVMi Request C1-MP
MNF22 11/20/2019 09:30:28 SIP INIT SUCCES
MNF35 11/20/2019 09:30:28 SVMi Request End C1-MP
MNF36 11/20/2019 09:30:28 SVMi HDD Alarm C1-MP 00%
MJE14 11/20/2019 09:30:28 MPS Restart C1-MP
MJE20 11/20/2019 09:30:28 OAS Start C1-S01
MJD24 11/20/2019 09:30:29 L2 Connect C1-S05
MJE33 11/20/2019 09:33:28 RTG Restart C1-MP

However, the system rebooted a number of times before that. All the digital phones would boot up, work for 2 minutes, then shut off for about 2.5 minutes. I tried a manual power reset of the 7200 which didn't change behavior.

I have pingplotter running on my network at all times to monitor uptime, and it shows the correlation between the mail server outage and the reboots

Anyone know why this happens?