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Windows Server 2000/2003 Thread, cannot send and receive email from outside in Technical; I cannot send email to outside and also cannot receive email from outside. Here are the settings of the SMTP ...
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    cannot send and receive email from outside

    I cannot send email to outside and also cannot receive email from outside.

    Here are the settings of the SMTP virtual server:

    Authentication: checked anonymous access
    checked Integrated Windows Authentication

    Relay restrictions: selected only the list below (the list contain my server's ip addr only)
    checked Allow all computers which successfully authenticated for relay to relay,
    regardless of the list above

    Connection: selected only the list below (the list contain my server's ip addr only)


    I have checked the port 25 is unblocked and the following Prevent mass mailing worms from sending mail in the categories of Anti-Virus Standard Protection in anti-virus is unchecked.

    I am wondering how can I configure the SMTP that can allow to send and receive email to outside.

    Thanks!

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    Do you get an error?

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    When I tried to send an email outside, the error is "This is an automatically generated Delivery Status Notification. Delivery to the following recipients failed."

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    Is the mail server configured to use a smarthost/relay or deliver directly?

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    Can you telnet out and in on port 25?
    Have you an external DNS forwarder? i.e. can you nslookup gmail.com and get a response?

    What does the queue say in exchange manager about the undeliverable messages?

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    The mail server is configured to deliver directly.

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    What is your in house Domain Name (ie domain.local). You will have to configure masquerading on your Exchange box.

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    Can you telnet out and in on port 25?

    Both cannot.

    Have you an external DNS forwarder? i.e. can you nslookup gmail.com and get a response?

    No, I do not have an external DNS.

    What does the queue say in exchange manager about the undeliverable messages?

    I am using windows server 2003. When I tried to send an email to outside with outlook express, an error "This is an automatically generated Delivery Status Notification. Delivery to the following recipients failed." is occured.

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    mb2k01's Avatar
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    Can you recieve internal to internal?

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    Can you recieve internal to internal?

    Yes.

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    Quote Originally Posted by kmount View Post
    Is the mail server configured to use a smarthost/relay or deliver directly?

    The mail server is configured to deliver directly.

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    mb2k01's Avatar
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    I'm sure it's something simple being overlooked (if the kids leave me alone over lunch time I might be able to think!)

    Are there any errors in the event log about replication or dns?

  13. Thanks to mb2k01 from:

    amychow (18th March 2009)

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    Hi In a rush earlier so forgive my first post. I have some questions. I assume this is a new exchange server?

    1. Is the NIC configured correctly with static IP and DNS pointing to DC in your domain with DNS forwarders correctly configured?

    2. Have you specified the correct default gateway?

    3. Do you have a public IP for the mail server and an associated DNS record? If so you should be able to use nslookup on both name and ip and get a valid response. If you fail here I would say you need to speak to your ISP.

    I will give you our set up as an example.

    Our MX record is held by redprotect.co.uk. We have been assisigned a public IP starting 193.164. Our mail server has a DNS record of mail.domainname.city.sch.uk. Our mail is delivered to Redstones mail server and forwarded to our mail server. The public IP 193. is forwared by our PIX to the mail server on our LAN.

    When I perform an nslookup on the name or public ip they both resolve correctly. Having performed the checks above can you resolve your public ip/dns name using nslookup?

  15. Thanks to Zorba from:

    amychow (18th March 2009)

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    Quote Originally Posted by mb2k01 View Post
    I'm sure it's something simple being overlooked (if the kids leave me alone over lunch time I might be able to think!)

    Are there any errors in the event log about replication or dns?
    There do not have any errors in the event log about replication or dns.

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    [QUOTE=amychow;306616]Can you telnet out and in on port 25?

    Both cannot.

    Umm if you cannot telnet out or telnet to your box on port 25 then you wont be able to send or receive mail. You need to open this port in your firewall.

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