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Adam

unread,
Nov 25, 1998, 3:00:00 AM11/25/98
to
I am having problems with receiving mail. Our E-Mail addresses have a dash
in them. We are not receiving E-Mail all the time. Some times it works,
sometimes it doesnt. Can a dash be used? Is there a problem with Exchange?

Example: john...@xyz.com

The E-Mail seems to work ok on addresses that I tested without the dash. I
would like to not change all the business cards and stationary with the
current addresses on it. Also, should I be able to ping xyz.com and get a
reply back from the mail server in order to get mail properly. We have had
several problems with our ISP regarding E-Mail.

Exhcanger Server 5.5 Build 1960.5
Windows NT Back Office Server 4.0 SP3

Adam


Rich Matheisen

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Nov 25, 1998, 3:00:00 AM11/25/98
to
"Adam" <a...@allegmach.com> wrote:

>I am having problems with receiving mail. Our E-Mail addresses have a dash
>in them. We are not receiving E-Mail all the time. Some times it works,
>sometimes it doesnt. Can a dash be used?

Yes.

Is there a problem with Exchange?

No.

>Example: john...@xyz.com
>
>The E-Mail seems to work ok on addresses that I tested without the dash. I
>would like to not change all the business cards and stationary with the
>current addresses on it.

Maybe if you told us what happens when someone tries to send a message
to that and it doesn't work we could offer some advice.

>Also, should I be able to ping xyz.com and get a
>reply back from the mail server in order to get mail properly.

No necessisarily. Some routers filter the ICMP echo protocol so pings
(or traceroutes) time out. It doesn't mean that other protocols have a
problem.

>We have had
>several problems with our ISP regarding E-Mail.

Then you should be discussing this with your ISP.

----------------------------------------------------------------
Richard Matheisen Wang Laboratories
Microsoft Certified System Engineer Tewksbury, MA USA
mailto:richard....@wang.com http://www.wang.com

Eric June

unread,
Nov 25, 1998, 3:00:00 AM11/25/98
to
Dashes are an acceptable character and they should introduce no
problems. Note the dash in my domain name.

--
Regards,

Eric June
Intuitive Data Solutions

--------- We Make OLE Servers Intuitive --------------
Eric June ej...@intuitive-data.com
Intuitive Data Solutions fax: (408) 776-1267
Send/Rcv Email *EASILY* through SMTP/POP, VIM, MAPI,
MHS & VINES http://www.intuitive-data.com/idsmail.htm
------------------------------------------------------

Rainer Rosenberger

unread,
Nov 29, 1998, 3:00:00 AM11/29/98
to
Rich Matheisen schrieb in Nachricht
<366f3e7c...@msnews.microsoft.com>...

>No necessisarily. Some routers filter the ICMP echo protocol so pings
>(or traceroutes) time out. It doesn't mean that other protocols have a
>problem.

Oh, interesting. I didn't know (as so much). But even if ping works it will
not mean that the mail server responsible for the destination domain as
defined in the related MX record is active.

Regards,

Rainer Rosenberger

__________________________________________________________
InterAktiv, Consulting & Realization
Dr. Rainer Rosenberger, Fürholzer Weg 6b, D-85375 Neufahrn
Phone: +49 8165 66577; Fax +49 8165 66507
mailto:Inter...@Online.de
http://www.online.de/home/Rosenberger
__________________________________________________________


Rich Matheisen

unread,
Nov 29, 1998, 3:00:00 AM11/29/98
to
"Rainer Rosenberger" <Inter...@Online.de> wrote:

>Rich Matheisen schrieb in Nachricht
><366f3e7c...@msnews.microsoft.com>...
>>No necessisarily. Some routers filter the ICMP echo protocol so pings
>>(or traceroutes) time out. It doesn't mean that other protocols have a
>>problem.
>
>Oh, interesting. I didn't know (as so much). But even if ping works it will
>not mean that the mail server responsible for the destination domain as
>defined in the related MX record is active.

That's correct. A "ping" uses the ICMP protocol. SMTP uses TCP.
Other's use UDP.

BTW, this is the reason "ping" doesn't work from a client running the
MS Proxy version of Winsock.

Adam Scott

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Nov 30, 1998, 3:00:00 AM11/30/98
to
On the addresses that have a dash they don't show up on the server or the
workstation. I dont receive any error messages that the message did not go
through on the sending machine. There are no messages in the inbound queue.
It's like the message just disappears. When the message with the dashed
address does work it shows up in about 10-15 seconds otherwise you know
after about a minute that you wont get anything.

Rainer Rosenberger

unread,
Nov 30, 1998, 3:00:00 AM11/30/98
to
Rich Matheisen schrieb in Nachricht
<3668b158...@msnews.microsoft.com>...

>That's correct. A "ping" uses the ICMP protocol. SMTP uses TCP.
>Other's use UDP.

Hello Rich,

that was not what I initially meant. I tried to explain that a positive
acknowledgement of ping to domain.com might not tell you, that the node
responsible for mail of domain.com is reachable as well. I guess that ping
uses the A-record of domain.com whereas SMTP MTAs usually use one of the the
MX-records of domain.com (if exists).

Regards,

Rainer

Rich Matheisen

unread,
Dec 1, 1998, 3:00:00 AM12/1/98
to
"Rainer Rosenberger" <Inter...@Online.de> wrote:

>Rich Matheisen schrieb in Nachricht
><3668b158...@msnews.microsoft.com>...
>>That's correct. A "ping" uses the ICMP protocol. SMTP uses TCP.
>>Other's use UDP.

>that was not what I initially meant. I tried to explain that a positive


>acknowledgement of ping to domain.com might not tell you, that the node
>responsible for mail of domain.com is reachable as well. I guess that ping
>uses the A-record of domain.com whereas SMTP MTAs usually use one of the the
>MX-records of domain.com (if exists).

How ping locates an IP address depends on how the ping was written!
The ping provided by MS is a Winsock application. This means that the
full gamut of MS name resolution is used (NBT Cache, HOSTS, DNS, WINS,
LMHOSTS, etc). A Unix ping would use only HOSTS and DNS.

The fact that ping is able to locate an IP address does tell you the
node (meaning host) is reachable. The problem is that it uses a
different protocol (ICMP, as noted). This does NOT imply that the
layers above the network layer in the OSI stack are operational. Nor
does it imply that there's an process listening on any particular
port.

A SMTP server should ask for the MX records for a e-mail domain, and
if there are none it should use the "A" record (if one exists) that
matches the e-mail domain name.

Rich Matheisen

unread,
Dec 1, 1998, 3:00:00 AM12/1/98
to
"Adam Scott" <ad...@compcomf.com> wrote:

>On the addresses that have a dash they don't show up on the server or the
>workstation.

What happens if you fire up a POP3 client and use your Exchange server
as the SMTP server and the POP3 server? when you send a message with a
"-" in the address, does it show up in the mailbox? Maybe it's not an
Exchange problem at all, but a problem with your ISP?

>I dont receive any error messages that the message did not go
>through on the sending machine. There are no messages in the inbound queue.
>It's like the message just disappears. When the message with the dashed
>address does work it shows up in about 10-15 seconds otherwise you know
>after about a minute that you wont get anything.

Have you checked the SMTP Protocol Log to see if the messages are
being sent to the Exchange server? Maybe they never make it there!

Adam Scott

unread,
Dec 3, 1998, 3:00:00 AM12/3/98
to
On 12/3 I contacted our ISP and had our domain name routed to the IP address
of the server.
Previously when I would ping xyz.com I would get Bad IP address.
Now when I ping xyz.com I get a reply from xyz.com at the IP address of the
server.
As soon as the ISP setup the routing, E-Mails from up to 2 days ago started
showing up on the office machines. This seems to indicate that some mail
servers can not send correctly if the name xyz.com is not routed even though
mail.xyz.com is routed in the MX tables.

Rich Matheisen wrote in message <36741f85...@msnews.microsoft.com>...


>"Rainer Rosenberger" <Inter...@Online.de> wrote:
>
>>Rich Matheisen schrieb in Nachricht
>><3668b158...@msnews.microsoft.com>...
>>>That's correct. A "ping" uses the ICMP protocol. SMTP uses TCP.
>>>Other's use UDP.
>
>>that was not what I initially meant. I tried to explain that a positive
>>acknowledgement of ping to domain.com might not tell you, that the node
>>responsible for mail of domain.com is reachable as well. I guess that ping
>>uses the A-record of domain.com whereas SMTP MTAs usually use one of the
the
>>MX-records of domain.com (if exists).
>
>How ping locates an IP address depends on how the ping was written!
>The ping provided by MS is a Winsock application. This means that the
>full gamut of MS name resolution is used (NBT Cache, HOSTS, DNS, WINS,
>LMHOSTS, etc). A Unix ping would use only HOSTS and DNS.
>
>The fact that ping is able to locate an IP address does tell you the
>node (meaning host) is reachable. The problem is that it uses a
>different protocol (ICMP, as noted). This does NOT imply that the
>layers above the network layer in the OSI stack are operational. Nor
>does it imply that there's an process listening on any particular
>port.
>
>A SMTP server should ask for the MX records for a e-mail domain, and
>if there are none it should use the "A" record (if one exists) that
>matches the e-mail domain name.
>

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