Windows 10: Cannot send mail from Outlook 2007 after upgrade

Yesterday I installed the win10 "November major upgrade" to my Win10 system. I upgraded to Win10 couple of months ago from Win7. There were some problems then but I managed to fix them. After yesterday's upgrade some of the problems reappeared. I had hard time to recall HOW I fixed it couple of months ago, but this one I just cannot get over:
When trying to send mail from Outlook 2007, this error appears: :Error 452.4.1.0 Policy violation . Your host xxx.xxx.xxx.xxx has no valid reverse DNS.: and mail resides in the "to be sent" folder. No need to say that before upgrade all worked OK and that this cannot be real error, because I can send mails from the same LAN via other devices. It seems that the upgrade changed something. The inability to send e-mail costs me lot of money and I need this to be solved asap.

:)

 

Outlook 2007 cannot send email

After installing windows 10 (fresh install not upgrade), and installing outlook 2007 I found that outlook 2007 stopped sending emails, the mail was stuck in the outbox.

I ran sfc /scannow

and this indeed fixed the problem for a couple of weeks.

Today again outlook 2007 stopped sending email,

again sfc/scannow fixed the issue.

I've never had problems with outlook 2007 with Windows 7, and I'm concerned that the resource file is being corrupted.

Anyone got an idea why this is happening?

Gary

 

Still cannot send emails from Outlook 2010 even after sfc/scannnow and latest updates from Microsoft

I still cannot send emails from Outlook 2010 even after running sfc /scanow and all the latest updates from Microsoft. I have deleted all the address and reinstalled 2010. It says the mails are sent but nothing its actually going. If I use the reply button
then the emails will send. My desktop with Outlook 2007 is now working great.

Anybody got an answer please.

 

Have you tried going to Programs and Features > right click at Microsoft Office 2007 > click CHANGE > click Repair ?
If that does not fix anything, consider Uninstall > Reinstall option.

 

No such entries in my Programs and Features

 

Did you install MS Outlook 2007 as a standalone ?
Your Program and Features has to have a listing of the program.

 

Are we talking about the same program ?
I am assuming you mean Microsoft Office Outlook 2007. Yes ?
Or, are you using Outlook.com which is a free web-based email program.

 

Office 2007 was preinstalled on my comp when I bought it. I also have some legacy installations of programs that are parts of different versions of Office. Program and Features lists Office 2000 (I have only Access installed from 2000 ver) . It does not list Office 2007. Anyway - all worked OK until yesterday.

 

RE : Office 2007 was preinstalled on my comp when I bought it.

How long ago ?
I find it odd that Office 2007 was given away free, unless it was a "trial" version.
Even then, it should be listed in Programs and Features. It HAS to be.
Something does not add up.
Microsoft Office has never been free.

 

I paid for the Office 2007 and the manufacturer preinstalled it for me. In 2009 I think

 

It makes even less sense. You bought a retail version, manufacturer installed it for you, and yet it does not show up in Programs and Features ?
That's impossible. All programs installed must be listed in Programs and Features.

Well, you do have the product key of Office 2007 do you ?

 

It's easily possible. And Programs and Features lists Office 2000 from which Installed only Access.
Anyway, the REAL problem is what caused Outlook 2007 to stop sending mails.

 

Office 2007 was installed by your manufacturer and you paid for it.
Yet it does not show in Programs and Features. That's easily possible ?

OK. If you say so.
I have no idea how to help you.
I apologize for wasting your time reading my replies.

Good luck.

 

It's easily possible because, simply, that's the way the things are I don't know whether this is caused by some bug during upgrade (because, frankly, I don't remember whether the entry existed before the upgrade). Nevertheless - the new info is that *** the IP address showing in the error message is not my WAN IP *** (of course it's neither my LAN local IP). What's causing this?

EDIT: Actually, it looks like I cannot send e-mails from any client on the upgraded box. Be it free, or paid.

 

I solved it. Look at After I cannot send mail from any mail client - Windows 10 Forums