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Configuring the Windows 2003 POP3 Service for Multiple Domains

 

Andrew Walman

19/04/2007

We've had some fun today setting up our existing secondary SMTP server to double up as a POP3 server for a new domain. Actually setting the POP3 service up is a doddle. It's also pretty simple to set up the MX records to get mail to actually arrive on the server. What we couldn't work out was why mail was just sitting in the SMTP queue and not being delivered to the drop directory. We were thinking things like it must be a problem with the DNS name, or service binding (the server has two NICs and about 10 IP addresses, and services incoming mail for about 15 domains).

Looking at the logs revealed little. Then I remembered, because we use Exchange for all our other email domains, we use LDAP routing on the SMTP servers to check whether the email account exists in AD before sending it to the Exchange server – a quite useful anti-spam measure, that stops the Exchange server getting nonsense emails. However, in this case we were setting up POP3 users using the password file method (its intended for hosting clients) so they had no account or email address in AD – so the SMTP server didn't know what to do. Turning this feature off (LDAP Routing) and restarting the SMTP service did the trick, and mail instantly arrived in the appropriate POP3 box.

The final thing we implemented was email domain quotas. This means the whole domain shares a quota, rather than each user being limited to a certain amount. Again this is made slightly trickier by using the password file method. First, you have to create a local account on the POP3 server – we've named ours after the corresponding domain. Then, enable disk quotas on the volume containing the POP3 boxes (C: if you haven't changed anything). Then add a new quota entry for this new user – 10MB per mailbox is generally the case. Then use the WINPOP utility to create a quota file for one of your email accounts, and associate this with the user account as follows:

 

      WINPOP createquotafile 
         user@domainname.com /user:useraccount
   

 

 

This will create a quotafile in the corresponding email accounts mailbox folder – copy this file and put it in each mailbox you create that this quota applies to, and the quota will apply to all those boxes.


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Better Mobile 4G and the Portable Office3089<p class="lead">​​<img class="img-responsive float-right" src="/ourblog/Blog%20Site%20Images/OneDrive-for-Business-App.png" alt="OneDrive for Business App" style="max-width&#58;300px;margin&#58;5px;" />Transport for London’s (TfL) plans to roll out 4G across the London Undergound network are continuing apace, with the <a href="http&#58;//www.cityam.com/287267/tfl-moves-step-closer-offering-4g-mobile-coverage-tube-2019" target="_blank">recent news</a> that this will likely include the new Elizabeth Line (aka CrossRail) and the planned C​rossRail 2 and Northern Line extension projects.</p><p>Suppliers and interested parties have had until July 6th to submit a selection questionnaire, which will then be evaluated before a more thorough tender goes out in early August.</p><p>City AM reports that companies will be competing to construct a commercial fibre optic network and the provision of a public WiFi service in specified TfL stations. The plan Is for the first stations to get connected during 2019, taking the capital one step closer to being a fully mobile working environment.​</p><p>WiFi already exists in some Tube stations, as it does on large parts of the train network across the country – even if the actual internet speeds vary widely depending on whereabouts you are!</p><p>Both TfL and the train companies will be heavily promoting the virtues of this type of connectivity for both leisure and work use, and it is popular here in the East Midlands, where we have a mixture of commuters heading into either London or Birmingham and companies who have to travel to see their clients.</p><p>But in the same way as nothing can beat the quality of a film that is already downloaded to your device, you need to make sure you have the processes and protocols in place for your mobile working to make sure you do not lose​ work unnecessarily. After all, there is nothing more frustrating than concentrating hard for an hour, only to see your work disappear because the saving process has not worked properly!</p><div class="well well-lg bg-color4 lead"><p>Here are Fuse’s top tips for your mobile working&#58;</p><ol><li>Make sure you have OneDrive syncing in place, so that when you save your document to your device it will automatically update onto your online OneDrive folder as soon as you are back online, thereby ensuring that your company work remains up-to-date<br></li><li>Do not get too reliant on having internet connectivity when you are on the move. Access to online resources may not be available for the duration of your whole journey, and even if your device is connected to the on-train WiFi the actual internet speeds will vary depending on whereabouts you are, or if you are in a tunnel<br></li><li>Have processes and checklists in place – even if they are just your own individual way of working, not official company policy – to ensure that you always download what you need onto your machine before you travel<br></li></ol></div>​ <p class="lead">Here at Fuse we believe that having the wherewithal to work effectively on the move is an integral part of the modern office. This includes OneDrive syncing being set up on all your machines, working with you to develop robust working practices for all your staff, and proactively making sure that your IT provision works to meet your needs, not the other way around.</p><div class="well well-lg"><p class="lead">Get in touch to find out how we can make sure that you have the great IT provision your organisation deserves! Call 01604 797979 or <a href="/_layouts/15/FIXUPREDIRECT.ASPX?WebId=4fc45909-2b6d-48b9-bcf9-a446e9d472d6&amp;TermSetId=c98895cd-d37f-4406-9cff-5480b4f829b6&amp;TermId=218eb0be-10f6-490a-82a7-a7fd47c8de90">send us an enquiry​​​</a></p>​ </div> | Chris Wearmouth | 693A30232E777C6675736563735C632E776561726D6F757468 i:0#.w|fusecs\c.wearmouth18/07/2018 23:00:002018-07-18T23:00:00ZAs better 4G rolls out across the nation how are you going to make your office truly mobile?As better 4G rolls out across the nation how are you going to make your office truly mobile?15/08/2018 09:36:021903htmlFalseaspx

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