Bashing my own country domain name isn’t something I really like to blog about. But after the problem started two or three years ago facing undeliverable and experiencing lost mails to our clients. I would encourage not to register dot COM dot BN domain as your primary email for business communication even they are considering the cheapest hosting in Brunei.
I myself really had enough hard time dealing with my own company users having issue with the email from time to time. It's so frustrating seeing these complain happening every month. Calling for Telbru to report the problem doesn't solve much and the worst solution I received was asking to applied for 3rd party SMTP service rather using their existing smtp.brunet.bn. I'm sorry but why bother to do email hosting in the first place? Most importantly, they can't accuse me telling lie because I still kept the past conversation between the technical guys today for safety evidence.
Of course, there are responsibilities on our side to make sure we didn't block our clients using spam & virus firewall. That was hardly happened because I was assigned to setting up a new company with only a small number users who also experience exact email issue without using any spam and virus firewall. Not to mention we tested with different espeed IP and domain names in different site office location also having the same problem. So what exactly went wrong?
I asked a few network experts on this issue and got the same answer. We have to look back at our ISP hosting setup. While I am no way claim to be expert on understanding everything. According to them, either they configure wrongly with the firewall setting filtering sensitive words (security reason) or randomly went into their junk mails or the routing locations may have cause disappearing for both incoming and outgoing messages no matter the company domain name is clean while using smtp.brunet.bn.
This explain a lot and I do have to agree on that. If such cases happen quite a lot every month. The final recommendation is switch entirely to other hosting services. I know a few local company do indeed already head for global dot com. I know people do feel the local companies don't support Brunei domain. You got to think, email communications not reaching both side effect business. Who wants that? And eSpeed are still crappy in industrial area that never solve today! What makes you think they should continue to trust the local ISP?