I have noticed an increase lately of customers asking if we can provide SMTP access on a port other than 25, specifically for those who are traveling internationally and their motel will not allow SMTP through. While I want to try and keep this blog as factual as possible, I do not believe that proivders should be offering SMTP on any other port with the intention to circumvent these port restrictions.
These restrictions were originally put in place by ISP’s to attempt to limit the number of zombie PC’s out there acting as either relays or spam senders. Every email provider will acknowledge that spam is a huge problem, however by opening these additional ports we are simply contributing to the problem.
My 2 cents worth.
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