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Sending mail with Thunderbird

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Hi. Since changing my ISP and losing the email addresses that came with it I have set up Thunderbird using the recommended settings for an AOL account and an Outlook account. This latter will not send messsages: I get messages to the effect that it can't contact the outgoing server office356.com which, of course is, the recommended setting. I realise there is an answer to this on the forum but I don't really understand it and anway things don't seem to happen as it says they should. I did, however, gather that the problem might lie with the authentication method so I switched it to "no authentication" and was able to send a mail yesterday but today the problem has returned. I would be glad of any help that can be offered, in simple terms please! Regards.

Hi. Since changing my ISP and losing the email addresses that came with it I have set up Thunderbird using the recommended settings for an AOL account and an Outlook account. This latter will not send messsages: I get messages to the effect that it can't contact the outgoing server '''office356.com''' which, of course is, the recommended setting. I realise there is an answer to this on the forum but I don't really understand it and anway things don't seem to happen as it says they should. I did, however, gather that the problem might lie with the authentication method so I switched it to "no authentication" and was able to send a mail yesterday but today the problem has returned. I would be glad of any help that can be offered, in simple terms please! Regards.

All Replies (6)

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Sorry, just noticed a typo: the server should read office365.com.

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Many thanks for your help. I have entered the settings as shown, except for the authentication method where the drop-down menu does't offer OAuth2. I put it to "no authentication" but that didn't work. Regards

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Sorry, forgot to say: I use Avast anti-virus and I don't have a VPN

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What is your TB version? If it's very old, OAuth2 isn't supported. The authentication method for O365/hotmail/outlook.com accounts is OAuth2, not 'no authentication' or 'normal password'. Avast is a well-known troublemaker, so I suggest you either remove it temporarily or run Windows in safe mode (to bypass startup apps like antivirus).

Your AOL account should also use OAuth2 for incoming and outgoing.

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Hello again. My version of TB is 115, which is up to date, apparently. I uninstalled it and reinstalled it which brought back OAuth2 on the server settings menu so I made sure it was set to that, and I tried it with Avast stopped but still no joy. The strange thing is that I can sometimes get it to send one message but no more with the same settings. I have spent so long on this (even before I asked for help) that I despair of it and am going, with the greatest reluctance, to use Windows Mail/Outlook instead. Many thanks for trying to help me.