RBR750 Email Logs

Thank you the response... what you said makes sense.  

Do you have any comment on the Outlook issue I am having sending email at certain times of the day?  I now think the problem may be related to sleep mode on my Windows 10 laptop when Outllook is open.  I don't think Outlook really goes to sleep in sleep mode and that something is going haywire with email authentication in sleep mode that is causing a block to be put up for security reasons.  Where this block is occurring is a mystery to me, but it seems to clear itself after so many hours.  Do you know of anything in the Orbi router that might cause such a block?  I am not running Netgear Armour on my RBR750.  I can turn my Windows Defender firewall OFF and I still experience the problem (i.e., I don't think the problem is on my PC); plus, my wife's computer and our two phones all lose the ability to send email at the same time.  I'm thinking either the block is occuring with my ISP but most likely with Comcast.