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Windows Thread, Exchange 2003 - no external email - urgent in Technical; Hi guys, got a big problem here, NM is out sick and im left trying to keep things ticking over, ...
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    Exchange 2003 - no external email - urgent

    Hi guys, got a big problem here, NM is out sick and im left trying to keep things ticking over, however exchange has been playing up, currently internal email is fine but were not recieving any external email. i have very little experience with ezxchange and am after some help please !

    what should i be checking? can someone talk me through it please?

    thanks

    Kev

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    kevbaz's Avatar
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    update







    any ideas? i dont want to go fat fingering

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    mmmmm is seems you cannot send email as well. I would check your firewall (if you have one between your exchange box and the net) first. It is more likely that you should contact your ISP since mail cannot reach your smarthost (ISP) via the SMTP connector.

    bio..

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    I would check the following;

    Make sure you know what your smarthost is - it's set under Protocols -> SMTP Server -> <name of your SMTP server - normally Default> Right Click -> Properties and look under Delivery and then Advanced.

    Then get a CMD box up and try resolving it if it's a hostname - nslookup smarthostname

    if that doesn't resolve you need to check your dns.

    If it does resolve or you've got an IP address in there try pinging it from a CMD box. or try a tracert -> tracert -d <smarthostname/IP>

    If you can get to it that's a start - then try telnetting to it on port 25 -> telnet <smarthost> 25

    If you can get a connection try a mail command such as EHLO<press enter>

    If you can't get to it check routing on the machine or firewall access.

    You may also want to check Control Panel > Admin Tools > Services and look to see if the Microsoft Exchange Routing Protocol is started and that the Simple Mail Transfer Protocol is Started.

    Have you also tried sending yourself an email from an external account? What happens? Do you get a message? or not?

    Have your tried your ISP - have they got any issues?

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    kevbaz (1st July 2009)

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    Thanks for the replies so far

    Then get a CMD box up and try resolving it if it's a hostname - nslookup smarthostname
    that resolves fine

    If it does resolve or you've got an IP address in there try pinging it from a CMD box. or try a tracert -> tracert -d <smarthostname/IP>
    tracert times out

    all services are up and running.

    is this looking more like an isa issue?

    SWGFL say they have no isses their end so its definatley something here...
    Last edited by kevbaz; 1st July 2009 at 02:06 PM.

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    Have you tried doing a reboot of the Exchange server? If it was working then just stopped often a restart can fix the issue.

    Just a thought.

    A

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    have restarted twice today already...

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    Quote Originally Posted by kevbaz View Post
    Thanks for the replies so far



    that resolves fine



    tracert times out

    all servies are up and running.

    is this looking more like an isa issue?
    Can you get through if you do: telnet <smarthost> 25

    or does that fail as well?

    If you have an ISA server in the way what version is it? does it provide your web browsing etc as well? If it does is that working?

    Can you see what the firewall rules are on it? is port 25 opened to your smarthost?

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    kevbaz (1st July 2009)

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    Kev,

    Have you checked your protolcols have all started?
    Have a look in your Services (control panel etc) and check the normal ones are running etc.

    PM me if you like - I'm quite local to you (another school in neghboring county) I could give you a ring / work through some things if you like?

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    kevbaz (1st July 2009)

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    Quote Originally Posted by mrmontymick View Post
    Can you get through if you do: telnet <smarthost> 25

    or does that fail as well?

    If you have an ISA server in the way what version is it? does it provide your web browsing etc as well? If it does is that working?

    Can you see what the firewall rules are on it? is port 25 opened to your smarthost?


    Telnet fails...


    We have 2 ISA servers one for inbound one for outbound, they are both isa 2003, our internet access is fine, we have no incoming or outgoing external mail, internal mail is fine, our website is also unavailable (www.tamarside.co.uk) which is hosted on one of our other servers.


    Kev,

    Have you checked your protolcols have all started?
    Have a look in your Services (control panel etc) and check the normal ones are running etc.

    PM me if you like - I'm quite local to you (another school in neghboring county) I could give you a ring / work through some things if you like?

    All the services seem fine, thanks for the offer ill see how it pans out

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    mb2k01's Avatar
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    If your site is unavailable too I'd guess the problem lays with the ISA servers. Would be worth concentrating efforts on them to confirm they're not the issue. (I'm not much help on those though!)

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    yar am looking at them now, although theres nothing obvious (i prefer issues with smoke coing out of servers, easier to find the problem!!)

    I will be restarting the server at 3pm when there will be less disruption, hopefully thatll help

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    Quote Originally Posted by kevbaz View Post
    Telnet fails...


    We have 2 ISA servers one for inbound one for outbound, they are both isa 2003, our internet access is fine, we have no incoming or outgoing external mail, internal mail is fine, our website is also unavailable (www.tamarside.co.uk) which is hosted on one of our other servers.





    All the services seem fine, thanks for the offer ill see how it pans out
    If you have the ability to I would plug a machine into the external side of your ISA servers - i.e. if the ISA servers are on a separate switch and then connected to your external router plug a machine into that external switch.

    Configure said machine with an appropriate IP address and the default gateway as your inbound ISA server and then try accessing your website from the external side of the interface. If it works you know your ISA server is working properly and the problem is either the external router or futher up the line.

    If it doesn't work you know it's the ISA server and you then need to look at the firewall publishing rules.

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    mb2k01's Avatar
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    It might be worth checking with SWGfL if there are any routing issues affecting you...
    (I've sent you a PM with results of a tracert)

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    Called swgfl earlier and theyre reporting no issues

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