Nodemailer smtp nodejs question

surprisedduck said:

In theory it shouldn't be too complicated, pending on what exactly you mean by changing IP address. The following should be a semi-functioning example of a way to rotate proxies after a threshold of successful messages are sent. You'll need to bring your own proxies of course, and handle any authentication they may need.

JavaScript:

//PSEUDO-CODE

var currentProxyAddress = 'https://someproxy'
var listOfProxyAddresses = [
    'https://someproxy1',
    'https://someproxy2',
    'https://someproxy3',
    'and so on',
]
const changeProxyAfterMessagesSent = 25 //Or whatever number you want
var messagesSentOnCurrentProxy = 0

function getTransporter() {
    if (messagesSentOnCurrentProxy >= changeProxyAfterMessagesSent) {
        //Make sure whatever function you write here doesn't choose the currently active proxy!
        currentProxyAddress = someFunctionToGetARandomProxyFromTheList()
        messagesSentOnCurrentProxy = 0
    }
   
    return nodemailer.createTransport({
        host: 'smtp.example.com',
        port: 465,
        secure: true,
        proxy: currentProxyAddress
    });
}

...

//When you want to send a mail:
getTransporter().sendMail(someOptions).then(() => {
    //if success,
    messagesSentOnCurrentProxy++
})

//Using async await might be a better approach to avoid synchronization issues
//Current code may potentially have an inaccurate messagesSentOnCurrentProxy (but probably not *too* inaccurate)

Click to expand...