Lz send mail when testing can be normal to send, and then to the server, now I go up and then issued a mail, I checked the error code, so many people have anti-virus software to intercept the 25 interface, but I'm not anti-virus software on the server, I turn off the firewall also, do you have a great god know what the problem is, or what causes this error!

CodePudding user response:

Where exactly the issue, wrong?