Meteorjs sendEerificationEmail error

I am setting up EMAIL_URL

process.env.MAIL_URL="smtp://xx%40gmail.com:yyy@smtp.gmail.com:465"

      

        
        
        
      

    

This worked with

Email.send({
    to: 'a@exmaple.com',
    from: 'b@exmaple.com',
    subject: 'test',
    text: 'some text'
});

      

        
        
        
      

    

However, this failed

Accounts.config({
    sendVerificationEmail: true
})

or

Accounts.sendVerificationEmail(userId,email)

      

        
        
        
      

    

gives me errors

Exception when calling method 'createUser' RecipientError: Unable to send mail - all recipients were rejected

at Object.Future.wait (.meteor \ tools \ dc9fb5197a \ lib \ node_modules \ fiber \ future.js: 326: 15)

in smtpSend (packages / email / email.js: 91)

at Object.Email.send (packages / email / email.js: 152)

at Object.Accounts.sendVerificationEmail (packages / accounts-password / password_server.js: 571)

in packages / accounts -password / password_server.js: 692

at tryLoginMethod (packages / accounts-base / accounts_server.js: 171)

at Object.Accounts._loginMethod (packages / accounts-base / accounts_server.js: 287)

at Meteor.methods.createUser (packages / accounts-password / password_server.js: 668)

at maybeAuditArgumentChecks (packages / livedata / livedata_server.js: 1487)

in packages / liveata / livedata _server.js: 643

in SMTPClient._actionRCPT (.meteor \ packages \ email \ a59237d5f0 \ npm \ node_modules \ simplesmtp \ lib \ client.js: 909: 27)

in SMTPClient._onData (.meteor \ packages \ email \ a59237d5f0 \ npm \ node_modules \ simplesmtp \ lib \ client.js: 329: 29)

at CleartextStream.emit (events.js: 95: 17)

in CleartextStream. (_stream_readable.js: 748: 14)

at CleartextStream.emit (events.js: 92: 17)

at emitReadable_ (_stream_readable.js: 410: 10)

at _stream_readable.js: 403: 7

on process._tickCallback (node.js: 419: 13)

Any help is greatly appreciated!