Using alternative port

I am running sendmail using a DSL account.  I can receive external emails 
but when I send they fail.  Recently I finally got my ISP to confess that 
they are blocking port 25.  Using telnet I have found that when I try to 
connect using port 25 I get "no route to host" but using 2525 I can 
successfully connect.

If tried to reconfigure sendmail to use port 2525 but my emails still fail. 
Not sure how to test and verify but maillog still reports that the error is 
"not route to host" which leads me to think that sendmail isn't using the 
alternative port.

Does anyone have any suggestions on debugging this or what configuration 
settings need to be to use a different port? 


0
11/30/2006 3:06:50 PM
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C Gillespie wrote:
> I am running sendmail using a DSL account.  I can receive external emails
> but when I send they fail.  Recently I finally got my ISP to confess that
> they are blocking port 25.  Using telnet I have found that when I try to
> connect using port 25 I get "no route to host" but using 2525 I can
> successfully connect.

I assume they are blocking your ability to open connections to tcp
port/25 from your dsl line to the net.

>
> If tried to reconfigure sendmail to use port 2525 but my emails still fail.
> Not sure how to test and verify but maillog still reports that the error is
> "not route to host" which leads me to think that sendmail isn't using the
> alternative port.

If you need sendmail to send email to other hosts (perhaps a smarthost)
on an alternate port you should define a new mailer or alter one of the
existing mailers.

See cf/README

If you need sendmail to receive email on another port you can use the
Daemon_Options to control that.

See cf/README

0
jmaimon (680)
11/30/2006 3:31:53 PM
"C Gillespie" <c_gillespie@iname.com> writes:

> I am running sendmail using a DSL account.  I can receive external emails 
> but when I send they fail.  Recently I finally got my ISP to confess that 
> they are blocking port 25.  Using telnet I have found that when I try to 
> connect using port 25 I get "no route to host" but using 2525 I can 
> successfully connect.
>
> If tried to reconfigure sendmail to use port 2525 but my emails still fail. 
> Not sure how to test and verify but maillog still reports that the error is 
> "not route to host" which leads me to think that sendmail isn't using the 
> alternative port.
>
> Does anyone have any suggestions on debugging this or what configuration 
> settings need to be to use a different port? 

http://www.sendmail.org/faq/section3.html#3.39
  Q3.39 -- How do I send using an alternate port?
  Created: May 5, 2002
  Last Update: January 10, 2004

BTW I suggest you to use MSA port (587) instead of port 2525.

-- 
[pl2en: Andrew] Andrzej Adam Filip : anfi@priv.onet.pl : anfi@xl.wp.pl
Before You Ask: http://anfi.homeunix.net/sendmail/B4UAsk-Sendmail.html
http://anfi.homeunix.net/sendmail/
0
anfi2 (1425)
11/30/2006 3:58:31 PM
Reply:

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... positive regulatory environment have all helped nurture the UK's P2P lending market. Europe is the next big market for P2P lending: The alternative ...

Outerwall eyes alternatives
Outerwall said on Monday that it would explore strategic and financial alternatives.

Commission wants UN to adopt alternative drug policies
UNITED NATIONS (AP) — The United Nations has a golden opportunity to promote alternate approaches to global drug policy next month when it meets ...

Resources last updated: 3/25/2016 5:23:29 AM