Unable to send a mail in production but in developement everything is fine

[dbonattoj]

Issue Summary

In localhost I can send mails without any issues, while when the website is pushed into production, I receive a ECONNRESET error..

Code Snippet

const sgMail = require("@sendgrid/mail")
sgMail.setApiKey('REMOVED');

const msg = {
        to: ['REMOVED', mail],
        from: 'REMOVED',
        subject: 'RVS - ' + subj + ' - ' + name,
        text: String(text),
        html: String(text),
    };

    sgMail.send(msg).then(() => {
        console.log('Message sent', msg)
    }).catch((error) => {
        console.log(error)
        console.log(msg)
    })
    response.status(200).json({
        status: 'Mail sent.',
        data: ":)",
    })

Exception/Log

fsserver_1  | Error: read ECONNRESET
fsserver_1  |     at TLSWrap.onStreamRead (internal/stream_base_commons.js:205:27) {
fsserver_1  |   errno: 'ECONNRESET',
fsserver_1  |   code: 'ECONNRESET',
fsserver_1  |   syscall: 'read',
fsserver_1  |   config: {
fsserver_1  |     url: '/v3/mail/send',
fsserver_1  |     method: 'post',
fsserver_1  |     data: '{"from":{"email":"REMOVED"},"subject":"RVS - 2 - B","personalizations":[{"to":[{"email":"REMOVED"},{"email":"REMOVED"}]}],"content":[{"value":"TEST MAIL FROM EXPERIMENT SERVER","type":"text/plain"},{"value":"TEST MAIL FROM EXPERIMENT SERVER","type":"text/html"}]}',
fsserver_1  |     headers: {
fsserver_1  |       Accept: 'application/json',
fsserver_1  |       'Content-Type': 'application/json',
fsserver_1  |       'User-Agent': 'sendgrid/7.1.1;nodejs',
fsserver_1  |       Authorization: 'Bearer REMOVED',
fsserver_1  |       'Content-Length': 305
fsserver_1  |     },
fsserver_1  |     baseURL: 'https://api.sendgrid.com/',
fsserver_1  |     transformRequest: [ [Function: transformRequest] ],
fsserver_1  |     transformResponse: [ [Function: transformResponse] ],
fsserver_1  |     timeout: 0,
fsserver_1  |     adapter: [Function: httpAdapter],
fsserver_1  |     xsrfCookieName: 'XSRF-TOKEN',
fsserver_1  |     xsrfHeaderName: 'X-XSRF-TOKEN',
fsserver_1  |     maxContentLength: Infinity,
fsserver_1  |     validateStatus: [Function: validateStatus]
fsserver_1  |   },
fsserver_1  |   request: Writable {
fsserver_1  |     _writableState: WritableState {
fsserver_1  |       objectMode: false,
fsserver_1  |       highWaterMark: 16384,
fsserver_1  |       finalCalled: false,
fsserver_1  |       needDrain: false,
fsserver_1  |       ending: false,
fsserver_1  |       ended: false,
fsserver_1  |       finished: false,
fsserver_1  |       destroyed: false,
fsserver_1  |       decodeStrings: true,
fsserver_1  |       defaultEncoding: 'utf8',
fsserver_1  |       length: 0,
fsserver_1  |       writing: false,
fsserver_1  |       corked: 0,
fsserver_1  |       sync: true,
fsserver_1  |       bufferProcessing: false,
fsserver_1  |       onwrite: [Function: bound onwrite],
fsserver_1  |       writecb: null,
fsserver_1  |       writelen: 0,
fsserver_1  |       afterWriteTickInfo: null,
fsserver_1  |       bufferedRequest: null,
fsserver_1  |       lastBufferedRequest: null,
fsserver_1  |       pendingcb: 0,
fsserver_1  |       prefinished: false,
fsserver_1  |       errorEmitted: false,
fsserver_1  |       emitClose: true,
fsserver_1  |       autoDestroy: false,
fsserver_1  |       bufferedRequestCount: 0,
fsserver_1  |       corkedRequestsFree: [Object]
fsserver_1  |     },
fsserver_1  |     writable: true,
fsserver_1  |     _events: [Object: null prototype] {
fsserver_1  |       response: [Function: handleResponse],
fsserver_1  |       error: [Function: handleRequestError]
fsserver_1  |     },
fsserver_1  |     _eventsCount: 2,
fsserver_1  |     _maxListeners: undefined,
fsserver_1  |     _options: {
fsserver_1  |       protocol: 'https:',
fsserver_1  |       maxRedirects: 21,
fsserver_1  |       maxBodyLength: Infinity,
fsserver_1  |       path: '/v3/mail/send',
fsserver_1  |       method: 'POST',
fsserver_1  |       headers: [Object],
fsserver_1  |       agent: undefined,
fsserver_1  |       agents: [Object],
fsserver_1  |       auth: undefined,
fsserver_1  |       hostname: 'api.sendgrid.com',
fsserver_1  |       port: null,
fsserver_1  |       nativeProtocols: [Object],
fsserver_1  |       pathname: '/v3/mail/send'
fsserver_1  |     },
fsserver_1  |     _redirectCount: 0,
fsserver_1  |     _redirects: [],
fsserver_1  |     _requestBodyLength: 305,
fsserver_1  |     _requestBodyBuffers: [ [Object] ],
fsserver_1  |     _onNativeResponse: [Function],
fsserver_1  |     _currentRequest: ClientRequest {
fsserver_1  |       _events: [Object: null prototype],
fsserver_1  |       _eventsCount: 6,
fsserver_1  |       _maxListeners: undefined,
fsserver_1  |       outputData: [],
fsserver_1  |       outputSize: 0,
fsserver_1  |       writable: true,
fsserver_1  |       _last: true,
fsserver_1  |       chunkedEncoding: false,
fsserver_1  |       shouldKeepAlive: false,
fsserver_1  |       useChunkedEncodingByDefault: true,
fsserver_1  |       sendDate: false,
fsserver_1  |       _removedConnection: false,
fsserver_1  |       _removedContLen: false,
fsserver_1  |       _removedTE: false,
fsserver_1  |       _contentLength: null,
fsserver_1  |       _hasBody: true,
fsserver_1  |       _trailer: '',
fsserver_1  |       finished: false,
fsserver_1  |       _headerSent: true,
fsserver_1  |       socket: [TLSSocket],
fsserver_1  |       connection: [TLSSocket],
fsserver_1  |       _header: 'POST /v3/mail/send HTTP/1.1\r\n' +
fsserver_1  |         'Accept: application/json\r\n' +
fsserver_1  |         'Content-Type: application/json\r\n' +
fsserver_1  |         'User-Agent: sendgrid/7.1.1;nodejs\r\n' +
fsserver_1  |         'Authorization: Bearer REMOVED\r\n' +
fsserver_1  |         'Content-Length: 305\r\n' +
fsserver_1  |         'Host: api.sendgrid.com\r\n' +
fsserver_1  |         'Connection: close\r\n' +
fsserver_1  |         '\r\n',
fsserver_1  |       _onPendingData: [Function: noopPendingOutput],
fsserver_1  |       agent: [Agent],
fsserver_1  |       socketPath: undefined,
fsserver_1  |       method: 'POST',
fsserver_1  |       insecureHTTPParser: undefined,
fsserver_1  |       path: '/v3/mail/send',
fsserver_1  |       _ended: false,
fsserver_1  |       res: null,
fsserver_1  |       aborted: false,
fsserver_1  |       timeoutCb: null,
fsserver_1  |       upgradeOrConnect: false,
fsserver_1  |       parser: null,
fsserver_1  |       maxHeadersCount: null,
fsserver_1  |       reusedSocket: false,
fsserver_1  |       _redirectable: [Circular],
fsserver_1  |       [Symbol(kCapture)]: false,
fsserver_1  |       [Symbol(kNeedDrain)]: false,
fsserver_1  |       [Symbol(corked)]: 0,
fsserver_1  |       [Symbol(kOutHeaders)]: [Object: null prototype]
fsserver_1  |     },
fsserver_1  |     _currentUrl: 'https://api.sendgrid.com/v3/mail/send',
fsserver_1  |     [Symbol(kCapture)]: false
fsserver_1  |   },
fsserver_1  |   response: undefined,
fsserver_1  |   isAxiosError: true,
fsserver_1  |   toJSON: [Function]
fsserver_1  | }
fsserver_1  | {
fsserver_1  |   to: [ 'REMOVED' ],
fsserver_1  |   from: 'REMOVED',
fsserver_1  |   subject: 'RVS - 2 - B',
fsserver_1  |   text: 'TEST MAIL FROM EXPERIMENT SERVER',
fsserver_1  |   html: 'TEST MAIL FROM EXPERIMENT SERVER',
fsserver_1  |   isMultiple: false,
fsserver_1  |   substitutionWrappers: [ '{{', '}}' ]
fsserver_1  | }

Technical details:

• sendgrid-nodejs version: 7.1.1
• node version: 0.0.0

I think it is a proxy problem, but I don't know how to solve it, I only found some information in java and they don't seems to work here sendgrid/sendgrid-java#182

Thanks

[thinkingserious]

Hello @dbonattoj,

This does not appear to be an issue with the helper library.

I think your initial thought of the error being caused by a proxy issue with your production server may be correct. Can you please confirm with the server admin? This StackOverflow question might help withe debugging also.

With best regards,

Elmer

[dbonattoj]

From the log, it seems that it is doing a POST request to https://api.sendgrid.com/.

I'm also doing POST request to other services without issues, I'm not so sure it is the real problem here.

At least a more meaningful help message would be interesting, because ECONNRESET can say anything in this context.

From the source code (https://github.com/sendgrid/sendgrid-nodejs/blob/master/packages/client/src/classes/client.js) I see that you are using Axios to make the POST requests, However, my others Axios requests work properly, I will dig in that direction anyway.

The server at the moment is not using https, could that be an issue?

[thinkingserious]

Can you please try making a hello world API call via cURL from your server?

The server at the moment is not using https, could that be an issue?

I think so, trying the cURL command above may help us further pinpoint where the issue resides.

[dbonattoj]

I receive a

curl: (35) OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to api.sendgrid.com:443

After a netstat -lntu
The port 443 is effectively closed, I will ask to open it and hope it was the issue.

Do I need to open it in/out? We have very strict policies on open ports

Are some other usual ports needed for using Sendgrid?

[dbonattoj]

Apparently, even with the 443 open,
the domain https://api.sendgrid.com is blocked at a higher level.. on a firewall over my firewall,
From outside this link gives me "404 not found" while from work it gives an empty page with "connection_reset"

I guess I will need to use another service or find out how to send smtp mails in javascript.

[thinkingserious]

I suggest that you (or the admin of your server) reach out to our support team with a link to this GitHub issue for further assistance. The issue appears to be network related vs. helper library related, so I will close the issue here. Thanks!