RE: Problem with outbound mails
- From: "Walkowiak, Matt" <Matt.Walkowiak@xxxxxxxxxxxx>
- To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
- Date: Mon, 1 Jul 2002 17:08:43 -0500
Dunno about this error, but I did find this - it might help you pinpoint
where your problem lies - good luck...
http://support.microsoft.com/default.aspx?scid=kb;EN-US;q285863
Matt Walkowiak
-----Original Message-----
From: Olomo Opeyemi [mailto:hoppy_lumz@xxxxxxxxx]
Sent: Monday, July 01, 2002 12:19 PM
To: [ExchangeList]
Subject: [exchangelist] RE: Problem with outbound mails
http://www.MSExchange.org/ - Re-Vamped!
Matt,
Thanks so much, your tip was really useful. But I
think the problem has to be with the DNS. I have this
following error message in my Event viewer
Event Type: Warning
Event Source: MSExchangeTransport
Event Category: Connection Manager
Event ID: 4000
Date: 7/1/2002
Time: 6:11:25 PM
User: N/A
Computer: OOH_LAG1
Description:
Message delivery to the remote domain 'hotmail.com'
failed for the following reason: Unable to bind to the
destination server in DNS.
Data:
0000: c00402d5
I really don't know what is wrong with the DNS records
cos I updated them. I can hit on port 25 of Internet
SMTP servers but I can surf the net.
U have any suggestions or tip on this. Cos I'm really
getting fusrated.
--- "Walkowiak, Matt" <Matt.Walkowiak@xxxxxxxxxxxx>
wrote:
> http://www.MSExchange.org/ - Re-Vamped!
>
>
> First thing, turn on SMTP logging - Servers -->
> Server name -->
> Protocols --> SMTP --> right-click on Default
> SMTP... and enable
> logging, and turn everything on.
>
> Then, pick your favorite SMTP server out on the
> Internet and try and
> "hit" it on port 25.
> telnet mail.domain.com 25
> you should get a 220 response.
> If you don't, make sure you can surf the internet.
> If you get a 220 response, then you need to make
> sure the domain name
> you are sending from exists in an A record. If the
> SMTP logs above, you
> might see error messages saying "domain does not
> exist" What some SMTP
> servers out there do is bounce your request to send
> back at you, to make
> sure you are really a mail server. If they can't
> see you, they reject
> you.
>
> This kinda thing happened to me. (forgive my poor
> composition skills if
> this makes no sense :)
>
> In the setup of a mail server (Imail, not exchange)
> it asks you what the
> FQDN of the mail server should be. I entered
> mail.domain.com. I never
> did have an A record for mail.domain.com - I didn't
> think I would need
> it. What I did do was have the MX record for
> domain.com point to
> office.domain.com - basically the FQDN of my router.
> SO... when I
> would try and send a message, my mail server would
> connect to the
> receiving SMTP server fine, then do an HELO from
> mail.domain.com. The
> receiving SMTP server at some point tries to talk
> back to
> mail.domain.com to make sure it is actually a mail
> server, but it looks
> for an MX record of mail.domain.com, not just
> domain.com - getting
> nothing back, it believes that my server is bogus
> and sends my packets
> to the bit-bucket.
>
> In other words, I'd look hard at DNS and where
> everything is pointing
> to.
>
> Also look at those log files.
>
> Matt Walkowiak
>
>
>
>
> -----Original Message-----
> From: Olomo Opeyemi [mailto:hoppy_lumz@xxxxxxxxx]
> Sent: Monday, July 01, 2002 2:19 AM
> To: [ExchangeList]
> Subject: [exchangelist] Problem with outbound mails
>
> http://www.MSExchange.org/ - Re-Vamped!
>
>
> I have a problem with my exchange server. It all
> started when my ISP changed my IP address and I had
> to
> reconfigure my DNS records and my router
> configuration
> to accomodate the chane. Initially my exchange was
> working fine but all of a sudden all remote mails
> started bouncing back. We can only send and receive
> mails locally. We cannot send remote mails but we
> can
> receive them.
>
> I've checked System administrator to see if there is
> any peculiarities but there seems to be none.
>
> Pls help.
>
>
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