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Unable to send emails

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Dalton07 -  
Hello

Once again, I come to ask for your help
I am, still and always, with Windows XP and Outlook Express
I can receive all my emails but I can no longer send any!!!
The following message appears:

Cannot send the message because the server rejected the sender's email address. This address was 'patrice.million@wanadoo.fr' Subject 'title of my email' Account '1 Patrice Million', Server 'smtp.wanadoo.fr', Protocol: SMTP, Server response: '550 5.1.0 Authentication required. Authentication Required. OFR102_402 [402]', Port: 25, Secure (SSL): No, Server error: 550, Error number: 0x800CCC78

I tried with my other email addresses, same negative result
What should I do or can I do?
Thank you in advance
Best regards
Dalton07

5 answers

  1.  barnabe0057
    Hello,

    Who is your internet service provider? Orange?
    1
    1. Dalton07 Author
      Indeed, it's Orange
      There must be a settings issue because just before, I couldn't open my emails or go online at all even though the box seemed to be working fine since the WiFi was working!!! I could check my emails and go online with an iPad
      And a technician from Orange who came to fix the phone line was able to, by doing some quick manipulation on my PC, get everything working again: receiving emails, going online..
      Best regards
      0
      1. barnabe0057
        In your Outlook Express account configuration, make sure that the box "My server requires authentication" is checked.
        0
        1. Dalton07 Author
          First of all, thank you
          I checked my account
          they all have the following settings:
          incoming mail: pop.orange.fr
          outgoing mail: smtp.orange.fr
          and the box for my server requires authentication was not checked, which has always been the case!!

          Following your advice, I checked that box and ..... it works!!!
          So thank you
          but a small additional question: why?? Until now, that box was never checked and everything worked!! Moreover, I didn't check the settings
          But the important thing is that everything works
          Thanks again
          Have a nice Sunday
          Best regards
          0
          1. barnabe0057
            Maybe Orange suddenly decided to authenticate customers in order to prevent abuse, particularly spammers looking for open SMTP servers to distribute their spam.

            Have a good Sunday as well.
            0