Member Avatar for rhino1616

Hi
I have setup 2 gmail accounts ( & )in Office Outlook 2003. My first account set as my default () is sending/recieveing emails perfectly. My second acccount can only send emails, but not recieve any & I receive this message:
"The server you are connected to is using a security certificate that could not be verified.
The certificates CN name does not match the passed value.
Do you want to continue using this server?

also under the errors tab I recieve this:

Task’myaccount2 – receiving’ reported error (0x800CCC90): ‘Your incoming (POP3) email server has reported an internal error. If you continue to receive this message, contact your server administrator or internet service provider (ISP). The server responded: 220 ESMTP

How can I rectify this situation?

Thank you

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  • Latest Post Latest Post by bobbyraw

Dani AI

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The certificate CN mismatch plus the SMTP banner in your error indicate Outlook is talking to the wrong host or using the wrong port for the receiving account. That commonly happens when the incoming server is set incorrectly (or SSL is forced against a server that presents a different cert). pointed to Gmail troubleshooting and suggested checking hostnames — the list below shows the exact Outlook 2003 settings to verify.

  • Incoming (POP3): pop.gmail.com — Port 995 — check “This server requires a secure connection (SSL)”.
  • Outgoing (SMTP): smtp.gmail.com — Port 465 with SSL (or 587 with TLS if your Outlook supports it) — enable authentication and choose “Use same settings as my incoming mail server”.
  • In the account’s Servers tab: make sure the username is the full Gmail address (e.g. myaccount2@gmail.com) and that “Log on using Secure Password Authentication (SPA)” is unchecked.
  • In Outgoing Server settings: check “My outgoing server (SMTP) requires authentication.”

Also check these items not yet covered in the thread:

  • Enable POP in the Gmail web settings (Forwarding and POP/IMAP) for the second account, and pick the desired “POP for all mail / mail that arrives from now on” option.
  • If the account has two-step verification, use a Google App Password in Outlook instead of the regular password; if Google is blocking the sign-in as “less secure,” the account security page will show alerts.
  • A certificate CN mismatch can be caused by an ISP or AV/antivirus mail/SSL scanner intercepting traffic. Temporarily disable mail scanning/SSL inspection or test from another network to rule that out.

If problems persist: remove and recreate the account carefully, ensure Office/Outlook 2003 is fully patched, and do not accept a certificate warning unless you are certain the hostname and cert are correct — accepting it hides the real issue.

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Member Avatar for hughv

See this gmail troubleshooting page:

You may have misconfigured your account, or you may need to update Outlook.
See the troubleshooting link at the bottom of the page.

Member Avatar for bobbyraw

double check the typing on the incoming and out going server. one missing dot or misspell will give you errors, also check the email address on gmail itself ensure no forwarding is configured.

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