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Email issue

Posted on 2014-04-22
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Medium Priority
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Last Modified: 2014-05-04
I cant seem to get emails in or out via my network (router).
My mobile phone is receiving everything ok (via 3g).

I cant ping my mail server from the network (router) but can ping other mail servers.
The internet is fine.

I have made no resent changes to the router

Any ideas?
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Comment
Question by:citrine
13 Comments
 
LVL 1

Expert Comment

by:Adonis Sardinas
ID: 40016604
Sounds like some sort of DNS issue
Can you ping your gateway?
Can you ping your DNS?
Can you ping the Mail server from your DNS server?
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LVL 25

Expert Comment

by:Mohammed Khawaja
ID: 40016606
please provide more details as to how your network is set as well as IP addresses and also if you have a firewall.
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LVL 23

Expert Comment

by:Thomas Grassi
ID: 40016610
Also how are you pinging by ip address or FQDN?

Try pinging using FQDN

run Nmap to check to see what ports your network has open.

make sure they are not blocked.

What type of email server?

What type of router?
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Author Comment

by:citrine
ID: 40016661
Its a Netgear DGND3700 Router
Only the firewall that is on the router, all default
I can ping the router (internet is working).

I does appear that the SBS2008 has DNS running, not sure if this is impacting
But computers are using DHCP from router, not the server
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Author Comment

by:citrine
ID: 40016673
With the server totally turned off I am still having the same issue
0
 
LVL 19

Expert Comment

by:Andrew Davis
ID: 40016695
This is SBS2008 so you need to configure the server and network in the correct manner.

The SBS server needs to be the DHCP server.

All the clients need to get their DNS from the SBS DHCP, and that DNS should be the SBS server with no option to go outside that.

All this is setup if you follow the wizard on the SBS machine.

Note** if you leave DHCP configured on the router, the SBS server will detect it and will stop its own DHCP server service as their can only be one DHCP server running on the network. So disable the DHCP on the router.

Then you will need to setup port forwarding on the router if you want to receive SMTP mail to the SBS server.

You really need to let us know a bit more about your configuration.
How are you trying to receive emails in and out? via SMTP or Pop3 collector.

What is your mail flow supposed to be. EG. emails will be delivered directly to my exchange server in SBS. or Emails are hosted with xyz.com and i want the SBS exchange server to collect them.

Cheers
Andrew
0
 

Author Comment

by:citrine
ID: 40016700
I dont want the SBS to be the DHCP
The emails are not via the SBS

Its just pop emails.

The issue is happening without the server turned on
I can ping on other ISP networks, but not this one.
Everything was working fine up till now, and we havent made any changes before the issue
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Author Comment

by:citrine
ID: 40016880
POP      mail.****.com
SMTP    mail.****.com

I changed the SMTP to that of the ISP and thats working fine.
The POP is still down
0
 
LVL 19

Expert Comment

by:Andrew Davis
ID: 40016887
"I dont want the SBS to be the DHCP"
Why bother buying SBS then. Waste of money. Lots of other things are going to give you dramas, unless you configure the DHCP to give the SBS server as the DNS.

Can you ping 8.8.8.8?
can you ping www.google.com?

So you can get email from the ISP but not your POP provider?
if that is correct then the issue is with the DNS resolution of your POP provider.
As you have given us very little information i have to make some assumptions.
You say the email works fine with your phone, so i will guess that your local domain is something like mycompany.com and your email is something like john@mycompany.com therefore your pop setting is something like mail.mycompany.com . If this is the case then you will need to put an A record into your DNS server to point to the external hosted POP service mail.mycompany.com

What happens when you ping the pop address of your mail provider?

I understand that you may not want to tell us your company name, hence **** but rather than stars it is better if you replace with things like mycompany, or companyA so that we can see that the two lines of **** mean different things.

Cheers
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Author Comment

by:citrine
ID: 40016902
"I dont want the SBS to be the DHCP"
Why bother buying SBS then. Waste of money. Lots of other things are going to give you dramas, unless you configure the DHCP to give the SBS server as the DNS.
Its not my server and they don't want to host their emails and they want DHCP controlled via router/modem

Can you ping 8.8.8.8?
can you ping www.google.com?
Yes, both are fine.

So you can get email from the ISP but not your POP provider?
The ISP told me to change the SMTP to theirs and thats working ok.

The SBS domain is: mycompany.local
pop is: mail.mycompany.com

What happens when you ping the pop address of your mail provider?
I get the same time out

Cheers.
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Author Comment

by:citrine
ID: 40016909
But like I said, even with the server turned off, the issue remains.
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Accepted Solution

by:
citrine earned 0 total points
ID: 40017118
Its all sorted, the mail host had blocked the IP to the office, as there was 5 attempts at mail with the wrong password. So with the IP unblocked its working fine.
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Author Closing Comment

by:citrine
ID: 40040186
I solved it without any other Experts
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