Serverless Compute - Python - Custom Emails via SMTP (smtplib.SMTP(host_name)) - Any alternative?

Ramana — Wed, 10 Sep 2025 14:38:13 GMT

Hello Community,

We have been trying to migrate our jobs from Classic Compute to Serverless Compute. As part of this process, we face several challenges, and this is one of them.

We have several scenarios where we need to send an inline email via Python Code and then process to execute the rest of the code or make the job fail. We know that Databricks workflows have failure/success/threshold email functionality, but that is not helpful for my scenarios.

In Classic Compute, I can send the emails by using smtplib.SMTP(host_name)/

sendmail(), but when it comes to the Serverless, this is not working.

Is there an alternative to sending code in-line emails when we execute any job with Serverless Compute?

#SMTP

#Custom-Email-Functionality

#Python

#Serverless-Compute

#Workflows

Re: Serverless Compute - Python - Custom Emails via SMTP (smtplib.SMTP(host_name)) - Any alternative

szymon_dybczak — Wed, 10 Sep 2025 15:51:47 GMT

Hi @Ramana ,

What error do you get in serverless? Could you provide error message?

Re: Serverless Compute - Python - Custom Emails via SMTP (smtplib.SMTP(host_name)) - Any alternative

Ramana — Thu, 11 Sep 2025 19:12:30 GMT

@szymon_dybczak it is neither a code issue nor an SMTP host issue, but it is purely related to Serverless Compute.

The same code and hostname work perfectly fine on Classic Compute but not on Serverless.

I don't think Databricks Serverless can recognize the third-party/client hostnames. If not, at least Databricks should have an alternative hostname to send custom emails.

Here is my code snippet and error details.

import email import smtplib from email.mime.multipart import MIMEMultipart from email.mime.text import MIMEText import traceback import logging # Intentionally erased all parameters before posting the code here to_email = "" from_email = "" subject = "Serverless Email!" message = "Serverless Email!" cc_email = "" bcc_email = "" host_name = "" try: print("Sending email - TO: " + to_email) msg = MIMEText(message) msg["Subject"] = subject msg["Message-id"] = email.utils.make_msgid() msg["From"] = from_email msg["To"] = to_email to_email = to_email.split(",") if cc_email: print("Sending email - CC: " + cc_email) msg["Cc"] = cc_email cc_email = cc_email.split(",") to_email = to_email + cc_email if bcc_email: # msg["Bcc"] = bcc_email bcc_email = bcc_email.split(",") to_email = to_email + bcc_email server = smtplib.SMTP(host_name) server.sendmail(from_email, to_email, msg.as_string()) server.quit() print("Email Sent Successfully!") except smtplib.SMTPException as e: print("Email Sending Failed.\nSMTP Exception: <br>" + str(e)) # logging.error(e) traceback.print_exc() raise Exception(f"Exception occurred: {e}") except Exception as e: print("Email Sending Failed. Exception: <br>" + str(e)) # logging.error(e) traceback.print_exc() raise Exception(f"Exception occurred: {e}")

Sending email - TO: Email Sending Failed. Exception: <br>[Errno -2] Name or service not known Traceback (most recent call last): File "/home/spark-1cd5f4c8-1a9c-413f-963c-1a/.ipykernel/2497/command-8820583165797855-46947889", line 34, in <module> server = smtplib.SMTP(host_name) ^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3.12/smtplib.py", line 255, in __init__ (code, msg) = self.connect(host, port) ^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3.12/smtplib.py", line 341, in connect self.sock = self._get_socket(host, port, self.timeout) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3.12/smtplib.py", line 312, in _get_socket return socket.create_connection((host, port), timeout, ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3.12/socket.py", line 828, in create_connection for res in getaddrinfo(host, port, 0, SOCK_STREAM): ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3.12/socket.py", line 963, in getaddrinfo for res in _socket.getaddrinfo(host, port, family, type, proto, flags): ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ socket.gaierror: [Errno -2] Name or service not known

topic Serverless Compute - Python - Custom Emails via SMTP (smtplib.SMTP(host_name)) - Any alternative? in Data Engineering

Serverless Compute - Python - Custom Emails via SMTP (smtplib.SMTP(host_name)) - Any alternative?

Re: Serverless Compute - Python - Custom Emails via SMTP (smtplib.SMTP(host_name)) - Any alternative

Re: Serverless Compute - Python - Custom Emails via SMTP (smtplib.SMTP(host_name)) - Any alternative