Forum Discussion
First time Install and Config Exchange Server 2019: Some questions
Hello everyone,
I am pretty new to Exchange Server 2019 so I decide to give it a try from installation to final config
I have processed the following:
1/ Register public domain (testexchange.com and mail.testexchange.com for example), setting up A record and MX record, pointing to our public IP: All good, using mxtoolbox.com show DNS record publised and all.
2/ Install Exchange Server 2019 on Windows Server 2019 - Standard edition: All latest updates done
3/ Config Accepted Domain, Send and Receive connector
4/ Create 2 mail receipients so far: Administrator and User1
5/ Sending and Replying a Test mail between the Administrator and User1 successfully
6/ From outside of LAN, I can access OWA and ECP, check email via web-page browser successfully
But so far, I cannot send nor receive any outside (Internet) email... I tried to send a test email from User1 to a google mail or other public emails, it said there is a delayed, with error message for example as per the following:
"Server at gmail.com (142.250.152.27) returned '451 4.4.397 Error communicating with target host. -> 421 4.2.1 Unable to connect -> SocketTimedout: Socket error code 10060'
Am I missing some steps along the above?
Thank you again for your patience and support
Kind regards
3 Replies
- OK, so I learn that my ISP has blocked the port SMTP 25 which is used by most mail server to send/receive mail from/to outside mailer. I have asked the ISP to release the port however, they said it's blocked by the spam policy and not an option to open it, unless it's a registered commercial IP
What are the option that I have in this scenario? Using different port or anyway to bypass the port 25?
Thank you- You can't bypass it. You have to have the port free, the other thing you can do is to use a smart host service. Have you pointed you MX records to your Firewall? Do you have any send connectors configured?
https://docs.microsoft.com/en-us/exchange/plan-and-deploy/post-installation-tasks/configure-mail-flow-and-client-access?view=exchserver-2019
