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Failure sending mail with error: system.io.ioexception

 2 years ago
source link: https://www.codeproject.com/Questions/5320408/Failure-sending-mail-with-error-system-io-ioexcept
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system.net.mail.smtpexception: Failure sending email.


What I have tried:
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Good afternoon.
Hope you are all fine.

I just need some help regarding my project.

Everytime i try to send email using vb.net code i am receiving the error below.

"system.net.mail.smtpexception: Failure sending email. --->
System.IO.IOException: Unable to read data from transportconnection: net_io_connectionclosed. at System.Net.mail.SmtpReplyReaderFactory.ProcessRead(Byte buffer, Int32 offset, Int32 read, Boolean readline)"

Note: I am using Office365.

Really appreciate if someone can give any idea how can i resolve this issue.
Thank you very much in advance.


Sincrely,

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