Re: [Exim] 550 Cannot route to <xxxx@yyy>

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Autor: jgolden
Data:  
A: exim-users, muth
Assumpte: Re: [Exim] 550 Cannot route to <xxxx@yyy>
Klaus,
My first question is where do you have your smart_route router in your
configuration file? This I believe should be located before your DNS
router
in the router section of your configuration file. If it is not I suggest
that you make this change and see if that resolves the issue.
Have a great day.

Sincerely,
Joseph T. Golden
Systems/Networks Administrator
Unix/Linux
Computer Sciences Corporation (CSC)
540.663.9251 ext 6289



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                    08/08/02 07:00 AM
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Today's Topics:

1. Re: SMTP AUTH obsurification? (Tamas TEVESZ)
2. Re: log_incoming_port (Philip Hazel)
3. Re: Message-Id header problems? (Philip Hazel)
4. Re: local_interfaces - small confusion (Philip Hazel)
5. Re: Log message at transport time. (Philip Hazel)
6. Re: Exim 3 multiple Ports (Philip Hazel)
7. Re: Routing with Spamcop (Philip Hazel)
8. which certificate for exim/TLS (Thomas Baumann)
9. error:dropped: too many unrecognized commands Revisited (Ralf
Hildebrandt)
10. Re: 550 Cannot route to <xxxx@yyy> (Klaus Muth)
11. Repost: [Exim] 550 Cannot route to <xxxx@yyy> (Klaus Muth)

Date: Thu, 08 Aug 2002 08:42:28 +0200 (CEST)
From: Tamas TEVESZ <ice@???>
Subject: Re: [Exim] SMTP AUTH obsurification?
In-reply-to: <Pine.LNX.4.33.0208072001320.32060-100000@???>
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On Wed, 7 Aug 2002, Dave C. wrote:

> I seem to remember once someone posting a way of recording the ID that
> was used for an SMTP AUTH session in the headers of a message, but
> hashing it in some way that hid the data from immediate view, but which
> the admin could decode using a secret key.
>
> I've search around, but am unable to find anything on this.
>
> Anyone here know where I can find this info?


right below this line: [;))]

ASMTP_HEADER_SECRET = pangalaktikgargleblaster

received_header_text = "Received: \
     [...]
     ${if def:authenticated_id { (authenticated sender: ${md5:
${authenticated_id}${message_id}ASMTP_HEADER_SECRET})}}\
     [...]


or you can put it in an X- header or something.


--
[-]



Date: Thu, 8 Aug 2002 09:55:56 +0100 (BST)
From: Philip Hazel <ph10@???>
Subject: Re: [Exim] log_incoming_port
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On Wed, 7 Aug 2002, Christopher Tromans wrote:

> On Wed, 7 Aug 2002, Philip Hazel wrote:
>
> > That's a byte-ordering problem. 34002 = 0x84d2; 53892 = 0xd284. Which
> > release of Exim? Which operating system?
>
> Sorry, should have said that. Redhat Linux 7.1, Exim 3.35 RPM from the
> ftp.exim.org site.


Looking at the sources, it looks like a bug was fixed during the Exim 3
to Exim 4 transition, though there is nothing in the ChangeLog (but I
didn't record every single change during that big upheaval).

I can give you a source patch for Exim 3, but that will require you to
rebuild Exim from source. In the file src/host.c you will see several
lines of the form:

    if (portptr != NULL) *portptr = sk->sin6_port;


There are 3 such lines (2 exactly like that, one slightly different).
The should all be changed along the following lines:

    if (portptr != NULL) *portptr = ntohs(sk->sin6_port);


That is, the value should be passed through the ntohs() function, which
converts short integer values from network byte order to host byte
order.

Looks like nobody has tried to use this on Exim 3 on a little-endian
host. Needless to say, the bug arose because I develop and test
(currently) on a big-endian host. Sorry about that.

Philip

--
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.




Date: Thu, 8 Aug 2002 09:59:09 +0100 (BST)
From: Philip Hazel <ph10@???>
Subject: Re: [Exim] Message-Id header problems?
In-reply-to: <Pine.LNX.4.44.0208071456580.9794-100000@???>
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To: Tamas TEVESZ <ice@???>
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On Wed, 7 Aug 2002, Tamas TEVESZ wrote:

> On Wed, 7 Aug 2002, John Robinson wrote:
>
> > Doesn't Exim insert its own message-id if it's missing? Why not when

the
> > supplied one is invalid?
>
> 'cause it would render tracking the message impossible ?


Exim merely checks for the existence of a Message-Id: header. It does
not check the syntax. This is in line with other MTAs, which don't check
such things.

It would have been nice if all MTAs from the start (20 years ago) had
been stricter in checking syntax. It is now far too late. Attempts to do
so always cause more trouble than they are worth. I can remember that PP
at one time tried to check the format of the Date: header. What
happened? It started to reject a lot of messages and lots of people got
very angry.

Closing doors is much harder than opening them, so it is best to start
with all the doors closed. :-) Unfortunately, this has not always been
the attitude that software writers have adopted.

--
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.




Date: Thu, 8 Aug 2002 10:00:59 +0100 (BST)
From: Philip Hazel <ph10@???>
Subject: Re: [Exim] local_interfaces  - small confusion
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On Wed, 7 Aug 2002, Odhiambo G. Washington wrote:

> "The string must contain a list of IP addresses, in dotted-quad format
> for IPv4 addresses, or in colon-separated format for IPv6 addresses.
> It is usually easier to change the list separator character instead of
> doubling all the colons in IPv6 addresses"


> So can I say that is is okay to use a colon, semi-colon or comma
> as separator for the list??
>
> local_interfaces = a.b.c.c ; e.f.g.h
> local_interfaces = a.b.c.d : e.f.g.h
> local_interface = a.b.c.d , e.f.g.h


No. You can only use colon by default. But you can change the delimiter
by specifying another one.

> And one last question - what does the < do, as in
> local_interfaces = < : a.b.c.d


That example is invalid. But

local_interfaces = <; a.b.c.d ; c.d.e.f ; ...

is a list where the initial "<;" changes the delimiter from : to ;.


--
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.




Date: Thu, 8 Aug 2002 10:02:09 +0100 (BST)
From: Philip Hazel <ph10@???>
Subject: Re: [Exim] Log message at transport time.
In-reply-to: <JIEFJNEDJOEMFFFEAIJOOEOFGOAA.drees@???>
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On Wed, 7 Aug 2002, Steve Drees wrote:

> Is it possible to generate a log message at transport time in Exim 3.x?


No, nor in Exim 4.x.

There is an item on the Exim 4 wish list to provide a programming hook
for customizing log messages, but it won't happen very soon.


--
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.




Date: Thu, 8 Aug 2002 10:04:40 +0100 (BST)
From: Philip Hazel <ph10@???>
Subject: Re: [Exim] Exim 3 multiple Ports
In-reply-to: <Pine.LNX.4.33.0208071902270.31725-100000@???>
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Cc: "James P. Roberts" <punster@???>,
<exim-users@???>
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On Wed, 7 Aug 2002, Dave C. wrote:

> Really? Hrm. I tried doing multiple ports and it didnt work.. Perhaps I
> will RTFM some more..


A setting such as

local_interfaces = <; 127.0.0.1.1225 ; [127.0.0.1]:1226 ; ::1

works for me. (It's from the test suite; hence the use of the two
different alternative syntaxes, just to test them.)

--
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.




Date: Thu, 8 Aug 2002 10:16:54 +0100 (BST)
From: Philip Hazel <ph10@???>
Subject: Re: [Exim] Routing with Spamcop
In-reply-to: <3719EDEE-AA7F-11D6-B6F0-000A278CC960@???>
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On Wed, 7 Aug 2002, Mark Edwards wrote:

> The spam_trap router is catching everything that has an X-Warning:

header,
> including the copies that had been copied to the user "backup" by the
> system-filter.


Exactly.

> The system-filter "backup" copy actually gets to the
> spam_trap router first, but is redirected to the user "spam" instead of
> "backup" by that router. However, the log entry says spam

<system-filter>
> because that particular copy actually originated in the system-filter.
> The other copies are discarded as duplicates.


Yup.

> I see two solutions. One is to make the spam_trap router deliver the
> address unseen. However, it wouldn't be much of a trap then, would it?
>
> The second, which I have chosen is to modify the spam_trap router thusly:
>
> spam_trap:
>    driver = redirect
>    condition = ${if def:h_X-Warning: {yes}{no}}
>    data = spam,backup
>    file_transport = address_file


Another solution would just be to exclude the user "backup" from the
spam trap:

spam_trap:
   driver = redirect
   condition = ${if def:h_X-Warning: {yes}{no}}
   local_parts = !backup                <=====================
   data = spam
#   file_transport = address_file   <====== you don't need this


> 1) Do you think I'm still confused?


Maybe. :-)

> 2) Is there a way to set this scheme up that you think is better?


See above. But whether it is better or not is moot. I think it is a bit
clearer.

> Again, thank you so much for your time, and for your lovely software.

The
> configurability is simply awesome.


Thank you.

--
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.




Date: Thu,  8 Aug 2002 11:18:31 +0200
From: Thomas Baumann <tirili+list.exim@???>
Subject: [Exim] which certificate for exim/TLS
Sender: exim-users-admin@???
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Hello list,

I am running exim 3.3x with TLS and I am using a self signed certificate.
But can sb. give me input
- which certificate i have to buy for use with exim
AND
- where to buy such a correctly signed certificate

Thanks for your reply.

Thomas.

--
Thomas Baumann // tirili+list.exim@???

-------------------------------------------------
This mail sent through tiri.li webmail server ...


Date: Thu, 8 Aug 2002 11:18:45 +0200
From: Ralf Hildebrandt <Ralf.Hildebrandt@???>
Subject: [Exim] error:dropped: too many unrecognized commands Revisited
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--
Margrit Lottmann wrote on <Friday 02 August 2002 19:08>:

> I have some lines in our log file , which I don't understand:
> 2002-08-01 17:25:08 SMTP call from hauptpostamt.charite.de
> [193.175.66.220] dropped: too many unrecognized commands
> nevertheless the message was delivered to the receiver, but the sender
> host repeats the delivery because there wasn't a regular end of the
> connection


From our side (Postfix), we observed the follwing:

With one particular mail being sent to Margrit's Mailserver (I stil
have that in my queue), Exim would always close the connection while
Postfix is still sending the mail data (after "DATA").

I then created a tcpdump (attached) which clearly shows that Exim
must have gone back to the command mode, but Postfix keeps sending
data and Exim barfs.

At least we have no firewall abominations like CISCO PIX or other crap
in the network path.

--
Ralf Hildebrandt (Im Auftrag des Referat V A)   Ralf.Hildebrandt@???
Charite Campus Virchow-Klinikum                 Tel.  +49 (0)30-450 570-155
Referat V A - Kommunikationsnetze -             Fax.  +49 (0)30-450 570-916
"Debugging is anticipated with distaste, performed with reluctance,
and bragged about forever."-Anon.


--
Aug 2 09:50:50 hauptpostamt postfix/smtp[9400]: warning: no MX host for
qmx.net has a valid A record
Aug 2 09:50:50 hauptpostamt postfix/smtp[9400]: A2D0815C016: to
=<kanten@???>, relay=none, delay=63098, status=deferred (Name service
error for name=ICE.QAX.net type=A: Host not found, try again)
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: <
mail.uni-magdeburg.de[141.44.1.10]: 220 mail.uni-magdeburg.de - ESMTP (EXIM
3.36) ready at Fri, 02 Aug 2002 09:52:22 +0200
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: >
mail.uni-magdeburg.de[141.44.1.10]: EHLO hauptpostamt.charite.de
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: <
mail.uni-magdeburg.de[141.44.1.10]: 250-mail.uni-magdeburg.de Hello
hauptpostamt.charite.de [193.175.66.220]
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: <
mail.uni-magdeburg.de[141.44.1.10]: 250-SIZE 20971520
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: <
mail.uni-magdeburg.de[141.44.1.10]: 250-PIPELINING
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: <
mail.uni-magdeburg.de[141.44.1.10]: 250 HELP
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: server features: 0xd size
20971520
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: Using ESMTP PIPELINING,
TCP send buffer size is 4096
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: lookup charite.de type 15
flags 0
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: dns_query: charite.de
(MX): OK
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: dns_get_answer: type MX
for charite.de
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: >
mail.uni-magdeburg.de[141.44.1.10]: MAIL FROM:<stefan.juettner@???>
SIZE=149850
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: lookup
Medizin.Uni-Magdeburg.DE type 15 flags 0
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: dns_query:
Medizin.Uni-Magdeburg.DE (MX): OK
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: dns_get_answer: type MX
for Medizin.Uni-Magdeburg.DE
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: dns_get_answer: type MX
for Medizin.Uni-Magdeburg.DE
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: >
mail.uni-magdeburg.de[141.44.1.10]: RCPT
TO:<Michael.Vieth@???>
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: >
mail.uni-magdeburg.de[141.44.1.10]: DATA
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: <
mail.uni-magdeburg.de[141.44.1.10]: 250 <stefan.juettner@???> is
syntactically correct
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: <
mail.uni-magdeburg.de[141.44.1.10]: 250
<Michael.Vieth@???> verified
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: <
mail.uni-magdeburg.de[141.44.1.10]: 354 Enter message, ending with "." on a
line by itself
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: header_token: multipart /
mixed
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: header_token: boundary =
----=_NextPart_000_000C_01C23965.5C6EF190
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: PUSH boundary
----=_NextPart_000_000C_01C23965.5C6EF190
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: header_token: multipart /
alternative
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: header_token: boundary =
----=_NextPart_001_000D_01C23965.5C6EF190
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: PUSH boundary
----=_NextPart_001_000D_01C23965.5C6EF190
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: header_token: text / plain
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: header_token: 8bit
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: header_token: text / html
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: header_token:
quoted-printable
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: POP boundary
----=_NextPart_001_000D_01C23965.5C6EF190
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: header_token: application
/ msword
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: header_token: base64
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: smtp_fputs: EOF
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: POP boundary
----=_NextPart_000_000C_01C23965.5C6EF190
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: connect to subsystem
private/defer
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: send attr nrequest = 0
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: send attr flags = 0
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: send attr queue_id =
8342115C009
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: send attr recipient =
Michael.Vieth@???
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: send attr reason = lost
connection with mail.uni-magdeburg.de[141.44.1.10] while sending message
body
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: private/defer socket:
wanted attribute: status
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: input attribute name:
status
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: input attribute value: 0
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: private/defer socket:
wanted attribute: (list terminator)
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: input attribute name:
(end)
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: 8342115C009: to
=<Michael.Vieth@???>,
relay=mail.uni-magdeburg.de[141.44.1.10], delay=70599, status=deferred
(lost connection with mail.uni-magdeburg.de[141.44.1.10] while sending
message body)
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: flush_add: site
Medizin.Uni-Magdeburg.DE id 8342115C009
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: connect to subsystem
public/flush
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: send attr request = add
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: send attr site =
Medizin.Uni-Magdeburg.DE
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: send attr queue_id =
8342115C009
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: public/flush socket:
wanted attribute: status
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: input attribute name:
status
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: input attribute value: 4
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: public/flush socket:
wanted attribute: (list terminator)
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: input attribute name:
(end)
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: flush_add: site
Medizin.Uni-Magdeburg.DE id 8342115C009 status 4
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: name_mask: resource
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: name_mask: software
Aug 2 09:52:22 hauptpostamt postfix/smtp[9400]: name_mask: 2bounce
--
[ Content of type application/x-gunzip deleted ]
--


Date: Thu, 8 Aug 2002 11:26:06 +0200
From: Klaus Muth <muth@???>
Subject: Re: [Exim] 550 Cannot route to <xxxx@yyy>
In-reply-to: <200208060823.17715.muth@???>
Sender: exim-users-admin@???
To: exim-users@???
Message-id: <200208081126.06458.muth@???>
MIME-version: 1.0
Content-type: text/plain; charset=iso-8859-1
Content-transfer-encoding: 7BIT
Precedence: bulk
Message: 10
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Am Dienstag, 6. August 2002 08:23 schrieb Klaus Muth:
[... problem with Exim 3.22 as smarthost for sendmail ...]
> My guess is now, that there is some kind of DNS problem involved. Maybe

it
> would help to fiddle around with the dns_rety and dns_retrans parameters,
> but I do not really know what I'm doing.

Nobody out there who could tell me at least that my guess is right or
wrong? Or that trying to modify dns_rety and dns_retrans will help if this
is really a DNS problem?

klaus
--
Klaus Muth
HAGOS eG                      Industriestr. 62      fon: (+49) 711 78805-86
EDV-Programmierung            70565  Stuttgart      fax: (+49) 711 78805-35
http://www.hagos.de               Germany              mailto:muth@hagos.de




Date: Thu, 8 Aug 2002 11:39:46 +0200
From: Klaus Muth <muth@???>
Subject: Repost: [Exim] 550 Cannot route to <xxxx@yyy>
In-reply-to: <200208060823.17715.muth@???>
Sender: exim-users-admin@???
To: exim-users@???
Message-id: <200208081139.46431.muth@???>
MIME-version: 1.0
Content-type: text/plain; charset=iso-8859-1
Content-transfer-encoding: 7BIT
Precedence: bulk
Message: 11
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References: <200208060823.17715.muth@???>
List-Post: <mailto:exim-users@exim.org>
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List-Help: <mailto:exim-users-request@exim.org?subject=help>
List-Id: A user list for the exim MTA <exim-users.exim.org>


Am Dienstag, 6. August 2002 08:23 schrieb Klaus Muth:
> I had this question before on news:de.comm.software.mailserver, but they
> pointed me here ;).

Somebody wrote me, he didn't find my original message. Maybe there was
some problem, since I subscribed just some minutes before. So I repost
my first mail to this list (hoping that nobody will be offended).

---- Repost of message Tue, 6 Aug 2002 08:23:17 +0200 ----
Hi!
I had this question before on news:de.comm.software.mailserver, but they
pointed me here ;).


We've got the following setup: In our intranet, we have an antique
Sun/Solaris
with Sendmail 8.8.8 and it has configured our mailserver (exim 3.22) as
smarthost. Sometimes we have to send about 200 mail, 400kB each to our
customers. Each mail is composed and sent separately. Ok, now the problem:
about 10% of these mails bounce:
----- The following addresses had permanent fatal errors -----
xxxx@yyy


----- Transcript of session follows -----
... while talking to mail.hagos.de:

>>> RCPT To:<xxxx@yyy>


<<< 550 Cannot route to <xxxx@yyy>
550 xxxx@yyy... User unknown


If I send again later, there is no problem with this address!


exim_mainlog:
2002-07-30 16:14:42 verify failed for SMTP recipient \
           xxxx@yyy <weinert@???> \
           H=zentra.hagos.de [192.168.100.200]
[...]
2002-07-30 16:36:36 17ZY71-0007ie-00 <= weinert@??? \
           H=zentra.hagos.de [192.168.100.200] P=esmtp \
           S=167671 id=2005_16974_1028039429_1@Zentra
2002-07-30 16:36:48 17ZY71-0007ie-00 => xxxx@yyy R=lookuphost \
           T=remote_smtp H=email.aon.at [195.3.96.71] \
2002-07-30 16:36:48 17ZY71-0007ie-00 Completed



(as you have guessed: zentra.hagos.de is our Sun/Solaris, email.aon.at is
the mailserver handling xxxx@yyy's mail, the lines after "[...]" are the
log entries from the second try.


My guess is now, that there is some kind of DNS problem involved. Maybe it
would help to fiddle around with the dns_rety and dns_retrans parameters,
but I do not really know what I'm doing.


I can't test this, because the problem only appears when I send this
bulk of mails around. Any hints? Things to try?


thanks!


--
Klaus Muth
HAGOS eG                      Industriestr. 62      fon: (+49) 711 78805-86
EDV-Programmierung            70565  Stuttgart      fax: (+49) 711 78805-35
http://www.hagos.de               Germany              mailto:muth@hagos.de






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