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prodigy.net.mx is an isp in Mexico and its emails are like: john@prodigy.net.mx
They make it very difficult to send email I use runbox, yahoo, direct smtp etc. and the only way they get teher is using their page and their smtp. How can I see where the problemlies so I can circunvent it?
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Yahoo: Change SMTP port to 587
Runbox: Change SMTP port to 26 or 587






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Runbox does have TLS security for SMTP
http://www.runbox.com/twiki/bin/view/RunboxWizard/SecureConnections
you can use secure.runbox.com for POP and IMAP over SSL, and SMTP over TLS.
The port numbers to use are:
* POP: 995
* IMAP: 993
* SMTP: 25, 26, or 587
Then in the Runbox settings, go Server Settings > Advanced > SMTP tab. Select the runbox smtp server.

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Are we talkin about www.runbox.com?






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We not talking about Runbox main page; we are talking about setting up SMTP in Thunderbird. So with Thunderbird open, go to Tools > Accounts. Hilight Runbox Server Settings in the left pane. On the right pane, click on the Advanced button and then SMTP tab.
Email Clients
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An email client, email reader or more formally mail user agent (MUA) is a computer program in the category of groupware environments used to access and manage a user's email. A web application that provides message management, composition, and reception functions may internally act as an email client; as a whole, it is commonly referred to as webmail. Likewise, email client may be referred to a piece of computer hardware or software whose primary or most visible role is to work as an email client. Email clients can also have other systems, like calendars, notes and contact managers.