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Does your mail server require Authentication to send? Mine does. The setting for authentication is in Outlook -&gt; Accounts -&gt; Settings -&gt; More settings -&gt; Outgoing Server. Your ISP (optonline) will know if this must be set. ... Thinkpads_User<br />

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Does your mail server require Authentication to send? Mine does. The setting for authentication is in Outlook -> Accounts -> Settings -> More settings -> Outgoing Server. Your ISP (optonline) will know if this must be set. ... Thinkpads_User


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This especially applies to optonline.com, an address I have personal experience with. &nbsp;They've were a nightmare to deal with due to their mass mailings being characterized as spam.<br />

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This especially applies to optonline.com, an address I have personal experience with.  They've were a nightmare to deal with due to their mass mailings being characterized as spam.


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I have an email account with optonline.net <br />
Email works fine when I am connected to Internet at home. &nbsp;<br />
However, when I use mobile broadband internet connection with Verizon Wireles, Outlook receives emails ok, but it cannot send any emails. &nbsp;I don't get any errors. &nbsp;Does anyone know how to fix this?<br />
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Below are my settings for the email servers.<br />
<br />
Incoming mail server: mail.optonline.net<br />
Outgoing mail server(SMTP): mail.optonline.net
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I have an email account with optonline.net 
Email works fine when I am connected to Internet at home.  
However, when I use mobile broadband internet connection with Verizon Wireles, Outlook receives emails ok, but it cannot send any emails.  I don't get any errors.  Does anyone know how to fix this?

Below are my settings for the email servers.

Incoming mail server: mail.optonline.net
Outgoing mail server(SMTP): mail.optonline.net

Problem sending email using Outlook with optonline.net when using Verison Mobile Broadband internet connection

Interactions between email servers and clients are governed by email protocols. The three most common email protocols are POP, IMAP and MAPI. Most email software operates under one of these (and many products support more than one).  The correct protocol must be selected, and correctly configured, if you want your email account to work.

Email Protocols

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.