Send an email

KNIME Analytics Platform
1

Hello all,
I feel like a dumb… I do not find the way to send an email via knime.
I just tried through the send email node and it doesn’t work…
I use an SFR email (I’ve also tried my gmail) and doesn’t work for me.
If someone has already mastered to setp up this node I would really appreciate help.

Regards,
KNIME_project.knwf (4.3 KB)

2

Hi @crnico,

what is the error message you get?
From just a general look it seems fine like you do it :slight_smile:

Does your mail service has an smtp service?
Ist STARTTLS insead of SSL correct?
*e.g. could it be that you need port 587 insead of 465? (in case of gmail and STARTTLS?)

For gmail
smtp.gmail.com

SSL needed: yes
TLS needed: yes(if availible)
Authentification required: yes
Port for SSL: 465
Port for TLS/STARTTLS: 587

1 Like
3

Hi AnotherFraudUser,

I think my mail service has an smtp service (since I can find smtp information for sfr on internet)

When I tried STARTTLS with port 587 or SSL with 465 I get :
ERROR Send Email 0:1 Execute failed: Error while communicating with the smtp server: javax.mail.MessagingException: Can’t send command to SMTP host;
nested exception is:
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

I don’t really understand this message to be honest with you/

4

I’ve also tried with the gmail parameters you mentionned I get this message :
ERROR Send Email 0:1 Execute failed: Error while communicating with the smtp server: javax.mail.AuthenticationFailedException

5

Finally I managed to make it works…
I had to activate on my gmail account the paramater “allow access to the applications less secured” an now it’s working.
Thanks a lot AnotherFraudUser

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6

@AnotherFraudUser,

Do you have any idea of how to find my enterprise smtp host and port?
We’re working with outlook with exchange email but I’ve no idea of how to find it.

7

Hi @crnico,

in case you use outlook365 you could try:
SMTP Host: smtp.office365.com
SMTP Port: 587
SSL Protocol: OFF
TLS Protocol: ON
SMTP Username: (your Office365 username)
SMTP Password: (your Office365 password)
https://www.hesk.com/knowledgebase/?article=93

However in our company this is disabled - and the only possibility is to get the local admin to give you an technical smtp proxy

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