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Editorial Team
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Asked: 2026-05-24T07:45:42+00:00

Im having issue with mail sending In web.config file <mailSettings> <smtp from=xxxx@companyname.com> <network host=mail.authsmtp.com

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Im having issue with mail sending
In web.config file

<mailSettings>
    <smtp from="xxxx@companyname.com">
    <network host="mail.authsmtp.com" port="25" userName="xxxx@companyname.com" password="****" defaultCredentials="false"/>
            </smtp>
        </mailSettings>
</system.net>

I used mail sending code to send mail

but im getting exception as, The server response was: 5.0.0 Your email system must authenticate before sending mail:XM_ERR:xxx.xxx.xxx.xxx(my ip addr)

Please let me know how to solve this issue.

Thank you

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1 Answer

  1. Editorial Team

    Do you want to use credentials from web.config file?

    If yes, than change defaultSettings to true.

    If not, than you must supply valid credentials in code.

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