I've been getting this error randomly, several times a day, when sending email from my Outlook 2016 client. This only started in the past week. Any ideas on why this is happening? If I resend an email after getting this error, it seems to go through fine.
Can you post the entire error? I know error 452 is when you send more then 100 messages at one time or sent too many over a certain period of time, but that is only from Cox. First need to know what server is giving the error.
Yea, then it's probably their new servers failing if more then one person is having the same error. I knew Cox email was going to be bad when they outsourced. Just wait until you have to call a "special" number to get email support. Then it will truly be the end.
I get my error through Norton after sending the email - Norton picks it up as it comes back and displays it. BTW, I've tried inserting the image, etc but no luck with that. The entire error is simply as noted in the subject. All the rest of the info is the To, From, Subject of the email.
Disable Norton from scanning outbound. As long as you scan your inbound and your computer, you won't have any malware on your system that you have to worry about outbound. See here for instructions.
The reason I have seen it cause problems is Outlook will open the connection to the SMTP server and keep it idle as Norton scans it. The way Norton handles this can cause some SMTP servers to error out. My guess is something changed with Cox's SMTP server that exaggerated this effect.
I was thinking about it some more in researching another thread, and I wonder if changing the server timeout will help. My guess is since the server is now off Cox network, the time it takes to communicate with it is longer, and anything that slows it down can cause the problem.Stopping scanning will decrease the amount of idle time needed, but increasing the amount of time the client can go idle before error might help more. See here for instructions.
Either try my work around yet? Also, can either of you confirm how many account are set up in your Outlook, and how many of them are for Cox? Last, does this happen on any other email client except Outlook?