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ROUTEPRO: <br />
I found a Mac-based article on Earthlink's website which suggests that they do block outbound connections on port 25.<br />
Take a look at : <a href="http://support.earthlink.net/mu/1/psc/img/walkthroughs/macintosh/os_x/email/mail/7177.psc.html" rel="ugc">http://support.earthlink.net/mu/1/psc/img/walkthroughs/macintosh/os_x/email/mail/7177.psc.html</a><br />

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ROUTEPRO:
I found a Mac-based article on Earthlink's website which suggests that they do block outbound connections on port 25.
Take a look at : http://support.earthlink.net/mu/1/psc/img/walkthroughs/macintosh/os_x/email/mail/7177.psc.html [http://support.earthlink.net/mu/1/psc/img/walkthroughs/macintosh/os_x/email/mail/7177.psc.html]


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25 is a very highly blocked port for ISPs. &nbsp;They say its for spam purposes, but its more for you running a spamming server or relay than it is for incoming spam.
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25 is a very highly blocked port for ISPs.  They say its for spam purposes, but its more for you running a spamming server or relay than it is for incoming spam.

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It is in fact Earthlink blocking the port.<br />
<br />
I connected using a dial-up of a different provider and I was able to use telnet with no problem.<br />
<br />
<br />
Thanks for the comments.
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It is in fact Earthlink blocking the port.

I connected using a dial-up of a different provider and I was able to use telnet with no problem.


Thanks for the comments.

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Glad I could help :-)<br />

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<div class="content wysiwyg-content">
Hi There,<br />
<br />
I have 2 networks in my office. One has an exchange 5.5 and another has exchange 2003.<br />
<br />
From my house I can not telnet to port 25 on any of the two servers.<br />
<br />
If I telenet from a diferent location then my house it works fine. <br />
<br />
Can it be my ISP blocking it? I have earthlink at home.<br />
<br />
If so, is there a way to bypass that? &nbsp;And why would they do that?<br />
<br />
Thanks<br />

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Hi There,

I have 2 networks in my office. One has an exchange 5.5 and another has exchange 2003.

From my house I can not telnet to port 25 on any of the two servers.

If I telenet from a diferent location then my house it works fine. 

Can it be my ISP blocking it? I have earthlink at home.

If so, is there a way to bypass that?  And why would they do that?

Thanks


Telnet to port 25 does not work from any location  exchange 2003 / exchange 5.5

The Windows operating systems have distinct methodologies for designing and implementing networks, and have specific systems to accomplish various networking processes, such as Exchange for email, Sharepoint for shared files and programs, and IIS for delivery of web pages. Microsoft also produces server technologies for networked database use, security and virtualization.