11/11/2022 0 Comments Office 365 smtp settings![]() ![]() WindowsError: Eine vorhandene Verbindung wurde vom Remotehost geschlossen.įailed to read beginning of SSL/TLS record. SmtpCmdResp: 220 Microsoft ESMTP MAIL Service ready at Mon, 11:51:12 +0000 He mentioned an interesting point, which need to be double checked: As far as he was informed from the user directly - or how he had understood it - the error doesn't show up, if the user chooses another "Mandant" (client) in the application and sends E-mails from there.Ĭan someone help identify the cause of the error? SendEmail: When I talked to him on the phone, I found out that he doesn't know more about Chilkat than I do. The support person of the application he couldn't find any problem and asked concerning that error code - what i assumed he should be able to examine. In the meantime, I have added them nonetheless.īelow is the Chilkat Log, showing that - after the server is ready - the clientHandshake2 fails with error code 0x2746. Those were missing, but there were entries for TLS 1.2, so I didn't assume this is an issue, espccially because the entries concerning cryptography (also mentioned in the post) did already exist. SMTP Username: (your Office365 username) SMTP Password: (your Office365 password) Also make sure that your: 'From' email in HESK settings (General tab) is set to your Office365 email address. I found this post mentioning that entries for TLS 1.0 need to be in the registry. I'm stuck to find the cause of the error and also I don't know, what data exactly is sent from the application during the connection, which makes the analysis more difficult. Yesterday, one E-mail could successfully be sent after a computer restart - the next ones failed again. ![]() ![]() After that, sending E-mails from the application had worked. Furthermore, client authentication needed to be disabled for the mailbox. After a migration from on-premise exchange to Microsoft 365, the account and server settings were changed at end of March this year. An application, which obviously uses Chilkat plugin, does not correctly send E-mails anymore using an Office 365 account. ![]()
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