[KLUG Members] Sendmail connection

Russell Dillenburg members@kalamazoolinux.org
Wed, 21 Aug 2002 11:16:23 -0700 (PDT)


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Port 80 is going through fine though, not being blocked at all.  I've heard 25 is a common port for ISP's to block which could be the case but why wouldnt i be able to connect to sendmail from my local windows computer.  
Thanks for your reply
 adam@morrison-ind.com wrote:>Sendmail is starting to annoy me. I can't see why this still will not work. 
>I can connect to my sendmail through telnet localhost 25, but cannot connect
>from the outside. 

Simple, your ISP is blocking 25 & 80 to protect a$$#### running toy OSs from
things like redworm, etc... And intelligent people, as always, get screwed in
the process.

>have my firewall (ipchains/tables) set to accept all. I have the
>hosts.allow set to all:all, and I have the /etc/mail/access set to relay all
>my private computers (windows), and a couple machines (my friends and
>gwind.pair.com) outside the local network. 

Not such a good idea, that type of control can be spoofed. Better to use a VPN
or authenticated SMTP.

>I am actually thinking this could be the linksys router, however it seems
>very unlikely since 80 and 22 both are forwarding correctly to linux.
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Russell Dillenburg
"The software business is binary, you're either a 1 or a 0--alive or dead."



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<P>Port 80 is going through fine though, not being blocked at all.&nbsp; I've heard 25 is a common port for ISP's to block which could be the case but why wouldnt i be able to connect to sendmail from my local windows computer.&nbsp; 
<P>Thanks for your reply
<P>&nbsp;<B><I>adam@morrison-ind.com</I></B> wrote:
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">&gt;Sendmail is starting to annoy me. I can't see why this still will not work. <BR>&gt;I can connect to my sendmail through telnet localhost 25, but cannot connect<BR>&gt;from the outside. <BR><BR>Simple, your ISP is blocking 25 &amp; 80 to protect a$$#### running toy OSs from<BR>things like redworm, etc... And intelligent people, as always, get screwed in<BR>the process.<BR><BR>&gt;have my firewall (ipchains/tables) set to accept all. I have the<BR>&gt;hosts.allow set to all:all, and I have the /etc/mail/access set to relay all<BR>&gt;my private computers (windows), and a couple machines (my friends and<BR>&gt;gwind.pair.com) outside the local network. <BR><BR>Not such a good idea, that type of control can be spoofed. Better to use a VPN<BR>or authenticated SMTP.<BR><BR>&gt;I am actually thinking this could be the linksys router, however it seems<BR>&gt;very unlikely since 80 and 22 both are forwarding correctly to linux.<BR>_______________________________________________<BR>Members mailing list<BR>Members@kalamazoolinux.org<BR></BLOCKQUOTE><BR><BR><TABLE width="67%" border=0>
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<P><A href="http://12.251.0.48/"><IMG src="http://12.251.0.48/icons/Ysignature.gif" border=0></A><BR>--<BR>Russell Dillenburg<BR><EM>"The software business is binary, you're either a 1 or a 0--alive or dead."</EM></P></TD></TR></TBODY></TABLE><p><br><hr size=1><b>Do You Yahoo!?</b><br>
<a href="http://rd.yahoo.com/careers/mailsig/new/*http://www.hotjobs.com">HotJobs, a Yahoo! service</a> - Search Thousands of New Jobs
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