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Content

You are here:
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  2. General discussion

Microsoft365 SMTP email

Added by Peter Tabori about 1 year ago

Dear all,

we just migrated from google workspace to Microsoft 365. Email sending worked flawlessly with google, but now I can not make it work with Microsoft.

Emission email address matches SMTP username

server = smtp.office365.com

port = 587

smtp helo = companyname.com

authentication = tried all, none of them worked

username= user@companyname.com 

password = generated App-password

STARTTLS = on

Whenever try to send a test email I get:

An error occurred while sending mail (Net::ReadTimeout with #46142 

In the MS-tenant admin interface SMPT is enabled.


Replies (2)

RE: Microsoft365 SMTP email - Added by Srinivasa Reddy about 1 year ago

Hi, I had the same problem in send mail after migrating from Gmail to Microsoft365. 

In my case , I'm getting error message as "An error occurred while sending mail (getaddrinfo: Name or service not known)".

If I try the same credentials and all other settings in windows forms application(using c#), I was able to send mails using MailMessage concept.     

Only additional line that i had added in windows forms application is "System.Net.ServicePointManager.SecurityProtocol = System.Net.SecurityProtocolType.Tls12", In OpenProject is there a way that i can add this line in configuration file manually.

RE: Microsoft365 SMTP email - Added by David Bilbie 10 months ago

Hi Peter - Did you manage to resolve this as I have the same problem. Thanks

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