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ZAMEEL ISMAIL

I am trying to configure Zoho Mail SMTP in Odoo 18 (Windows 11, local installation) but Odoo fails to send emails even though “Test Connection” is successful.

SMTP settings used:

  • SMTP Server: smtppro.zoho.in

  • Port: 465

  • Encryption: SSL/TLS

  • Username: full Zoho email

  • Password: app password

  • Outgoing email domain: configured

Odoo shows Test Connection: SUCCESS, but when I try to send an actual email (quotation, reset password, etc.) I get:

SMTPServerDisconnected: please run connect() first

What I need help with

  1. What are the correct SMTP settings for Zoho Mail + Odoo 18?

  2. Is there any additional configuration required (SPF, DKIM, ports, app password)?

  3. Why does the Test Connection succeed but real email sending fails?

  4. Does Zoho require a different hostname for SMTP from local servers?

If anyone is using Zoho Mail successfully with Odoo 18, please share the correct working configuration.

Thanks!

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Kunjan Patel
Best Answer

Hello ZAMEEL ISMAIL

I Hope You are doing well,

    Here is your final working setup summary of it for solved the "run connect() first error":

SMTP Serversmtp.zoho.in
Port465
EncryptionSSL/TLS
UsernameFull Zoho email
PasswordZoho app password (Zoho → My Account → Security → App Passwords → Generate)
From FilterSame as user
User EmailMust match Zoho email
DNSSPF + DKIM + DMARC

Hope this information helps you.

Thanks & Regards,
Kunjan Patel

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Codesphere Tech
Best Answer

Hello,
Please refer this official documentation which is very helpful for you.
https://www.odoo.com/documentation/18.0/applications/general/email_communication/email_servers_outbound.html#using-a-custom-domain-to-send-emails

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