Goodmorning everybody, I manage a small IT company with a microsoft 2003 Business Server that runs an 2003 Exchange Server. Soon the company will switch to another ISP, so the email settings will also change, which means that the email-settings should be change to the correct values as soon as possible. My question is: Do I only have to change the POP3-settings in the pop connector settings or do I have to change more settings (like smtp??) I hope someone has an answer for me, thank you very much in advance! Kind regards, Mike

Sounds like you are not completely hosting your own email - i.e. you let your ISP handle it (i.e. host mailboxes for you), and then you suck it into your local mailboxes with the POP connector? Are they also going to care of any public DNS changes for you? You will probably need to tell your SMTP connector to route via the new ISP's SMTP servers. I'm not sure if you're aware, but having an ISP host your mailboxes, and then using the POP connector, isn't what most people do. There's obviously nothing wrong with it (and you get the benefit of using someone else's infrastructure, backups, etc.), but any advice you receive here will need to take it into account. You're going to have to do things slightly differently, because whereas most people receive their email direct (and will just need to change their public DNS to point to their current public IP address), that wouldn't work for you, since your email needs to go to your ISP instead. If I've correctly understood your post, that is.Mobile OWA For Smartphone www.leederbyshire.com email a@t leederbyshire d.0.t c.0.m

Thank you for the quick response. You correctly understand my question. I don't want to change too much, because i don't have full knowledge of Exchange. On the protocols in the SMPT Settings, this option is set: "use dns to route to each address space on this connector" Do i have to change the DNS name/IP? Or is changing the POP3-settings sufficient? Thanks! Mike

When you change the ISP, I think you need to make sure the records for your Exchange Server is right, and Exchange Server is connect to the right DNS server. Thanks, EvanEvan Liu TechNet Community Support

Thanks for your reply! When I open the DNS settings, it's shows the ip-address of the server. Does this mean the Business Server controls the email when the emails received by POP3? I can't find MX Records as well or see the ip-address here from the server itsself. Thanks, Mike

contact yout existing provider and ask them to provideyour existing host record settings then provide to your new isp. There may be abit of work here because your public ip may change too. As for smtp get the new smtp server settings from the isp.aSukh

contact yout existing provider and ask them to provideyour existing host record settings then provide to your new isp. There may be abit of work here because your public ip may change too. As for smtp get the new smtp server settings from the isp.aSukh

Again, it depends upon how much your ISP is doing for you. If it is already set to use DNS, and has been previously working like that, then it should continue to work with that setting. It just means that your Exchange server is going to use public DNS to work out where to send emails for each domain (by looking up the MX record for each domain). And that's what most people do. The only reason you would change it is if your new ISP is not going to allow you to send out SMTP traffic to any destination other than their own servers, which will relay it for you. They might impose such a restriction to prevent being accused of allowing spambot infected computers from sending out mass junk emails. It also sometimes helps if you find that you are unable to send emails to certain domains. Some domains use spam detection services which may decide that your ISPs SMTP servers appear more trustworthy than yours. Because they are an ISP, and you're a small company.Mobile OWA For Smartphone www.leederbyshire.com email a@t leederbyshire d.0.t c.0.m

Again, it depends upon how much your ISP is doing for you. If it is already set to use DNS, and has been previously working like that, then it should continue to work with that setting. It just means that your Exchange server is going to use public DNS to work out where to send emails for each domain (by looking up the MX record for each domain). And that's what most people do. The only reason you would change it is if your new ISP is not going to allow you to send out SMTP traffic to any destination other than their own servers, which will relay it for you. They might impose such a restriction to prevent being accused of allowing spambot infected computers from sending out mass junk emails. It also sometimes helps if you find that you are unable to send emails to certain domains. Some domains use spam detection services which may decide that your ISPs SMTP servers appear more trustworthy than yours. Because they are an ISP, and you're a small company.Mobile OWA For Smartphone www.leederbyshire.com email a@t leederbyshire d.0.t c.0.m

But in the Server/DNS/Exchange settings i can't find a public IP, only a local 192.168.XXX.XXX IP. Is it possible that, when i configure the POP3 settings from the new ISP, everything works fine? I suspect that smtp-settings are configured so, that the "Virtual" Exchange Server handles this. Maybe i had previously inform you about it's a virtual server (i think), does this make any different? Sorry for all this questions, but i have to configure this next week. Thank you very much. Kind regards, Mike

Thank you!!