Canon imageRUNNER scan to email setup (SMTP settings)

Q: Port stays on 25 after you change it

On imageRUNNER ADVANCE the SMTP port lives under Communication Settings, separately from the server address. Changing the address alone leaves the port at 25. Port 25 does work with Scanhive, but 587 is preferred.

These are working scan-to-email settings for imageRUNNER ADVANCE, imageRUNNER C-series, i-SENSYS MF models. They point the printer at Scanhive instead of at Gmail or Microsoft 365, so the device no longer needs a mailbox password and isn't affected by either provider withdrawing basic authentication.

The settings

SMTP server	`smtp.scanhive.net`
Port	587 (or 25 on older devices)
Encryption	STARTTLS if offered — plain works for older firmware
Authentication	SMTP AUTH (LOGIN or PLAIN)
Verify server certificate	Off — see the note below
Username	from your dashboard, e.g. `prn_ab12cd34`
Password	shown once when you add the printer (rotate any time)

Turn “verify server certificate” off. Your scan is still encrypted over STARTTLS. That setting only asks the printer to check our certificate against its built-in list of authorities, and Canon firmware ships with old, un-updatable lists that often don't recognise modern certificates — so leaving it on makes some devices refuse to connect.

Step by step on a Canon device

Configure this from the Remote UI — browse to the device's IP address and log in as Administrator (default is often user 7654321). The panel can usually do it too, but the browser interface is far quicker and lets you paste the password.

Go to Settings/Registration → Send → E-mail/I-Fax Settings.
Set SMTP Server to smtp.scanhive.net.
Set the sender address in E-mail Address — any address is fine; Scanhive rewrites the sender before delivery.
Enable Use SMTP Authentication (SMTP AUTH) and enter your Scanhive username and password.
Enable Use TLS for SMTP (this is STARTTLS on port 587). Under Settings/Registration → Network → TCP/IP Settings → Certificate Settings, leave certificate verification for SMTP off.
Use Communication Settings to confirm the SMTP port is 587.

Common Canon problems

Port stays on 25 after you change it

On imageRUNNER ADVANCE the SMTP port lives under Communication Settings, separately from the server address. Changing the address alone leaves the port at 25. Port 25 does work with Scanhive, but 587 is preferred.

“TLS Error” or the job fails immediately

Turn off certificate verification for SMTP. Canon firmware validates against a built-in CA list that is rarely updated, so it can reject perfectly valid modern certificates. The connection is still encrypted.

Address Book entries rejected

Canon validates the recipient's domain against its own settings in some configurations. Send to a plain address first to confirm the SMTP path works, then re-add the Address Book entry.

Where the scan goes next

Once the printer can send, Scanhive decides what happens to each scan: deliver it to one or more verified email recipients, file it into encrypted storage, push it to Dropbox, Google Drive, OneDrive, SharePoint, S3 or SFTP, or post it to another system. That's configured once in the dashboard under Routes and applies to every scan from the device.

Don't have a Scanhive account yet? Create one free — adding a printer takes about a minute and gives you the username and password for the steps above.