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System.Net.Mail.SmtpException: Server does not support secure connections.

2 posts, 0 answered
  1. Sarlin
    Sarlin avatar
    1 posts
    Registered:
    26 Nov 2012
    12 Jun 2014
    Link to this post

    I am getting an exception " System.Net.Mail.SmtpException:: Server does not support secure 

    connections." when I try sending emails using office365.

    Under Administration >> Settings >> Advance >> System>> SMTP, I populated the following settings:

    host: smtp.office365.com
    Port: 587
    Username: xxxxx@xxxxx.com
    Password: xxxxxxx
    DeliveryMethod: Network
    EnableSSL: [ Checked ]
    Timeout: 10000
    DefaultSenderEmailAddress: xxxxx@xxx.com
    EmailSubjectEncoding: uft-8 
    EmailBodyEncoding: utf-8

    I am not sure why I am having this problem. It works in my local machine but it 

    doesn't work in production or my build environment.

    Any ideas why I am having this problem?

    Thank you for your time, 

    Sarlin

  2. Daniel Plomp
    Daniel Plomp avatar
    952 posts
    Registered:
    18 Feb 2004
    13 Jun 2014 in reply to Sarlin
    Link to this post

    Hi Sarlin,

    I think you need to change your port to 465, since you are using SSL. I'm using port 587 together with TLS, but I don't think that protocol is supported inside these SMTP parameters.

    Kind regards,
    Daniel

2 posts, 0 answered