It appears that more and more ISPs are blocking port 25 for outgoing e-mail. Customers are being informed about this through announcements on their ISPs websites or even getting warning e-mails on the subject. Some of the e-mails are such that the user is "tagged" for sending out an extraordinary amount of e-mail, and THAT's the reason for the port 25 block.
Whatever the case, we have enabled an alternate SMTP port 587 - and this will let you send out without incident.
To change your outgoing mail port - this is an example using Outlook 2007:
Open Outlook, and click on TOOLS -- > ACCOUNT SETTINGS
Double-click your existing e-mail account.
On the bottom right, click MORE SETTINGS.
Click the ADVANCED tab. Incoming mail should be 143, and change outgoing mail from 25 to 587. You can also slide the server timeouts slider all the way to the right, to ensure large messages don't get cut off.
Click OK, NEXT, and FINISH.
Click CLOSE on the Account Settings window.
Most times, the port 25 blockage applies to residential customers only and does not apply if customers are paying more for business-class services.
Any questions, please respond to this post or e-mail us.
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