Error sending email - wrong version number with protonmail SMTP

[Nachtschwingeswildhunt]

I am experiencing the same error as @VincenzoKoestler in this issue . I am trying to use the SMTP services from protonmail (they work with other services) which run on port 587 and use TLS. Is there something I can do here?

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  ✓ Ready in 144ms
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 Error sending email [Error: C03753BF6F7F0000:error:0A00010B:SSL routines:ssl3_get_record:wrong version number:../deps/openssl/openssl/ssl/record/ssl3_record.c:355:
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 ] {
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   library: 'SSL routines',
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   reason: 'wrong version number',
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   code: 'ESOCKET',
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   command: 'CONN'
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 }

[Swamp2k9]

EDIT: As a work-around, I've managed to get it working using SendGrid's below settings (Protonmail still isn't working):

SMTP_PORT | SMTP_SECURE | SMTP_TLS_ENABLED 2525 | false | false SMTP_USER: "apikey" SMTP_PWD: ${SendGridAPIKey}

//////

I'm also a Protonmail user with the same issue. I've recently added Protonmail's SMTP settings to my other products without any issues.

No matter what combination of settings I use, I'm not able to receive any emails (nor register for an account). Protonmail SMTP Instructions.

[Combinations I've tried w/ Error Logs]

/////// Invalid Login SMTP_PORT | SMTP_SECURE | SMTP_TLS_ENABLED 465 | true | true 465 | true | false 587 false | false 587 | false | true 25 | false | false 25 | false | true

Error sending email Error: Invalid login: 535 5.7.8 Error: authentication failed: authentication failed

    at SMTPConnection._formatError (/app/node_modules/nodemailer/lib/smtp-connection/index.js:790:19)

    at SMTPConnection._actionAUTHComplete (/app/node_modules/nodemailer/lib/smtp-connection/index.js:1548:34)

    at SMTPConnection.<anonymous> (/app/node_modules/nodemailer/lib/smtp-connection/index.js:546:26)

    at SMTPConnection._processResponse (/app/node_modules/nodemailer/lib/smtp-connection/index.js:953:20)

    at SMTPConnection._onData (/app/node_modules/nodemailer/lib/smtp-connection/index.js:755:14)

    at SMTPConnection._onSocketData (/app/node_modules/nodemailer/lib/smtp-connection/index.js:193:44)

    at TLSSocket.emit (node:events:517:28)

    at TLSSocket.emit (node:domain:489:12)

    at addChunk (node:internal/streams/readable:335:12)

    at readableAddChunk (node:internal/streams/readable:308:9) {

  code: 'EAUTH',

  response: '535 5.7.8 Error: authentication failed: authentication failed',

  responseCode: 535,

  command: 'AUTH PLAIN'

}

///////

Wrong Version SMTP_PORT | SMTP_SECURE | SMTP_TLS_ENABLED 587 | true | false 587 | true | true 25 | true | false 25 | true | true

Error sending email [Error: C0E73AAC2B7F0000:error:0A00010B:SSL routines:ssl3_get_record:wrong version number:../deps/openssl/openssl/ssl/record/ssl3_record.c:355:

] {

  library: 'SSL routines',

  reason: 'wrong version number',

  code: 'ESOCKET',

  command: 'CONN'

}

///////

Timeout SMTP_PORT | SMTP_SECURE | SMTP_TLS_ENABLED 465 | false | true 465 | false | false

Error sending email Error: Greeting never received

    at SMTPConnection._formatError (/app/node_modules/nodemailer/lib/smtp-connection/index.js:790:19)

    at SMTPConnection._onError (/app/node_modules/nodemailer/lib/smtp-connection/index.js:776:20)

    at Timeout.<anonymous> (/app/node_modules/nodemailer/lib/smtp-connection/index.js:710:22)

    at listOnTimeout (node:internal/timers:569:17)

    at process.processTimers (node:internal/timers:512:7) {

  code: 'ETIMEDOUT',

  command: 'CONN'

}

[johnpc]

I got the same issue with both icloud and AWS SES smtp

 ✓ Ready in 170ms
Error sending email [Error: 80BCEED134760000:error:0A00010B:SSL routines:ssl3_get_record:wrong version number:../deps/openssl/openssl/ssl/record/ssl3_record.c:354:
] {
  library: 'SSL routines',
  reason: 'wrong version number',
  code: 'ESOCKET',
  command: 'CONN'
}

Unfortunately, I cannot use SendGrid so I cannot confirm @Swamp2k9's finding that it works. Are there any other known supported smtp hosts?

[johnpc]

It does work with iCloud SMTP when SMTP_SECURE=false however this is not ideal

[Swamp2k9]

Hi @johnpc. I ended up switching over to PostMark for my SMTP services.