Fetchmail/Sendmail problem

Fetchmail/Sendmail problem

[Mike keithley]

This is probably off topic but the problem occurs getting mail from this
list so I thought I'd ask the experts.

I use fetchmail to get mail from shellworld.net (my ISP).  Fetchmail
negotiates with sendmail to get mail into my local mailbox.  Sendmail seems to 
want to verify that the sender domain is valid and checks a route.  
the intermittent problem is this:

braille.uwo.ca doesn't always have a route and the system waits forever
until shellworld's pop server times out.  On my mailbox at shellworld, 
the retrieved message, that wasn't delivered, is marked as read.  

This problem is intermittent and was very bad around the middle of
May.  It went away and is now back.  I tried "nslookup braille.uwo.ca" 
and, sure enough, I got "non-existent domain name".

So the questions: is there a way I can tell sendmail not to verify a
sender's domain?  Do I have a network problem?  Why is the problem 
intermittent?

I'm attaching part of the fetchmail log pertaining to a message that
behaved this way:

fetchmail: POP3> RETR 3
fetchmail: POP3< +OK 3406 octets
reading message 3 of 5 (3406 octets)
About to rewrite Return-Path: <speakup-admin@braille.uwo.ca>
Rewritten version is Return-Path: <speakup-admin@braille.uwo.ca>

About to rewrite From: "Raul A. Gallegos" <raul@asmodean.net>
Rewritten version is From: "Raul A. Gallegos" <raul@asmodean.net>

About to rewrite To: "speakup@braille.uwo.ca" <speakup@braille.uwo.ca>
Rewritten version is To: "speakup@braille.uwo.ca" <speakup@braille.uwo.ca>

About to rewrite Sender: speakup-admin@braille.uwo.ca
Rewritten version is Sender: speakup-admin@braille.uwo.ca

About to rewrite Reply-To: speakup@braille.uwo.ca
Rewritten version is Reply-To: speakup@braille.uwo.ca

fetchmail: forwarding to localhost
fetchmail: SMTP> MAIL FROM:<speakup-admin@braille.uwo.ca> BODY=7BIT SIZE=3406
*** wait about 60 seconds ***
fetchmail: SMTP< 451 4.1.8 <speakup-admin@braille.uwo.ca>... Sender domain must resolve
fetchmail: SMTP> RSET
fetchmail: SMTP< 250 2.0.0 Reset state
fetchmail: Saved error is still 451
 not flushed
fetchmail: POP3> RETR 7
fetchmail: POP3< -ERR POP timeout
fetchmail: POP3> QUIT
fetchmail: POP3< +OK Pop server at ns signing off.
. 
. 

Thanks

Re: Fetchmail/Sendmail problem

[Frank Carmickle]

Hi Mike

First thing that should be fixed is you getting a reasonable
nameserver.  This should clear up the problems.  You really don't want to
change much in the way of sendmail configuration because you don't want to
open yourself up as a relay for spam.

On Tue, 24 Jul 2001, Mike keithley wrote:

> This is probably off topic but the problem occurs getting mail from this
> list so I thought I'd ask the experts.
> 
> I use fetchmail to get mail from shellworld.net (my ISP).  Fetchmail
> negotiates with sendmail to get mail into my local mailbox.  Sendmail seems to 
> want to verify that the sender domain is valid and checks a route.  
> the intermittent problem is this:

-- 
     Frank Carmickle
phone:     412 761-9568
email:     frankiec@dryrose.com

Re: Fetchmail/Sendmail problem

[Mike keithley]

On Wed, 25 Jul 2001, Frank Carmickle wrote:

-Hi Mike
-
-First thing that should be fixed is you getting a reasonable
-nameserver.  This should clear up the problems.  You really don't want to
-change much in the way of sendmail configuration because you don't want to
-open yourself up as a relay for spam.
-
Thanks for the reply.

I'm on the @home network so I'm using their name servers.  If I wanted to
find another name server, how would I find one to try?  Thanks.

PS.  Last time this croped up I asked the shellworld administrator if he
could find a route to braille.uwo.ca and he couldn't.  

Re: Fetchmail/Sendmail problem

[Mike keithley]

It began working today!  Maybe being patient and letting it work itself
out is the ticket.  

RE: Fetchmail/Sendmail problem

[Holmes, Steve]

That's another incident of nameservers not resolving braille.uwo.ca
properly.  I wonder what's going on here.  One tends to use the DNS issued
by the ISP and if that's not reliable then the academic bar is thus raised
for us linux users to build a nameserver of our own.

-----Original Message-----
From: Frank Carmickle [mailto:frankiec@braille.uwo.ca]
Sent: Wednesday, July 25, 2001 1:25 AM
To: speakup@braille.uwo.ca
Subject: Re: Fetchmail/Sendmail problem


Hi Mike

First thing that should be fixed is you getting a reasonable
nameserver.  This should clear up the problems.  You really don't want to
change much in the way of sendmail configuration because you don't want to
open yourself up as a relay for spam.

On Tue, 24 Jul 2001, Mike keithley wrote:

> This is probably off topic but the problem occurs getting mail from this
> list so I thought I'd ask the experts.
> 
> I use fetchmail to get mail from shellworld.net (my ISP).  Fetchmail
> negotiates with sendmail to get mail into my local mailbox.  Sendmail
seems to 
> want to verify that the sender domain is valid and checks a route.  
> the intermittent problem is this:

-- 
     Frank Carmickle
phone:     412 761-9568
email:     frankiec@dryrose.com


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