How do I test that my ISP is blocking SMTP port? - Powered by Kayako Help Desk Software

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How do I test that my ISP is blocking SMTP port? Posted by Administrator on 24 December 2009 10:48 PM
How do I test that my ISP is blocking SMTP port? 1. Open dos window (Start -> Run -> cmd) 2. Type telnet mail.domain.com 25 Replace domain with your actual domain name 3. If you get a blank screen, then there is a block
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