aaPanel_Kern Hello, please check if your server can connect to port 25 of gmail? If not, maybe your server does not allow connections to port 25 of other servers. If you cannot connect to port 25 of other servers, you cannot send emails. CentOS: yum install telnet -y && telnet gmail-smtp-in.l.google.com 25 debian/ubuntu: apt install telnet -y && telnet gmail-smtp-in.l.google.com 25 mautone
QaisHajji Has anyone solved this problem? I think I tried to send an email to the same domain I am from and it didn't send either! Please how can we use a port other than port 25
aaPanel_Kern Hello, is there any error message? Sending from the mail server will automatically check whether port 25 is available. If it is not available, it cannot be sent. QaisHajji
QaisHajji aaPanel_Kern The message appears to me as follows "Some cloud vendors (such as Google, Amazon) close port 25 by default, and you need to contact the vendor to open port 25 before you can use the post office service normally", although I am trying to send a message to the same email I sent from! I thank you for your cooperation and for your wonderful efforts my friend, but please try to find a solution as this same problem has been around for a long time and has not been solved!
aaPanel_Kern Hello, this is a limitation of the server provider. Please consult the server provider to open port 25. Or use smtp relay QaisHajji
phxwolf To successfully send emails, you must use an SMTP relay service such as SMTPGo or SendGrid. You can configure this in the outgoing SMTP settings of your email application under the Mail section. These services utilize third-party servers instead of relying on your own port. It’s nearly impossible to get an email server to function properly without these third-party services. Additionally, your IP address must have a spotless reputation. Over the years, many people have abused servers, which is why cloud hosting companies generally block port 25.
aaP_awadkamal1 Hello, has anyone resolved this issue? I’ve checked the port, and it’s open. I also used the telnet tool to verify, and the port is working fine. Additionally, I can send emails to the same domain, and the connection with the provider is active, so the port appears to be functioning properly.
aaPanel_Kern Hello, use SSH tools to log in to the server and execute commands to check whether you can connect to mail? debian/ubuntu: apt install telnet -y && telnet gmail-smtp-in.l.google.com 25 centos: yum install telnet -y && telnet gmail-smtp-in.l.google.com 25 aaP_awadkamal1
aaPanel_Kern Hello, if you cannot use port 25, you can only use Smtp relay. Mail servers around the world can only be sent using port 25 and cannot be changed aaP_awadkamal1
aaP_awadkamal1 Hello Sir, Everything is working fine now. I have rechecked with the provider, and they need to open port 25 for the mail service. Additionally, I uninstalled and reinstalled aaPanel, and it's functioning properly. Thanks for your support!
