Scan to email and scan to folder: why scanning stops working, and how to set it up properly

Scanning is the feature people rely on most and think about least. It works quietly for months, then one morning the machine reports that it cannot send, and nobody can remember how it was set up in the first place. Most scanning problems come down to a handful of causes, and almost all of them are to do with what sits behind the printer — your mail server, your network and your file permissions — rather than the scanner itself.

The two routes most offices use

Multifunction devices can usually send a scan to several destinations, but in practice most businesses use one of two: scan to email, where the machine acts as a mail client and sends the document as an attachment, or scan to folder, where it writes the file directly to a shared folder on a server or PC. Each fails in its own characteristic way.

Why scan to email stops working

To send an email, the printer needs an outgoing mail server, a port, an encryption setting and, in nearly all cases, a username and password. If any one of those changes, sending stops. The most common triggers are a mailbox password being changed or expiring, a mail provider tightening its security settings so that basic username-and-password sending is no longer accepted, or a mailbox being migrated to a new platform.

Where a provider no longer allows a simple password login, the usual fix is to authenticate in a way the device supports — often a dedicated app password, or a mail relay or connector configured on the mail platform specifically for devices like printers and scanners. It is worth giving the machine its own mailbox or send-only account rather than borrowing a member of staff’s, so that a personnel change does not take scanning down with it.

Attachment size limits are the other frequent culprit. If large scans bounce back but small ones arrive, you are hitting a size cap somewhere between the printer and the recipient, not a fault on the machine.

Why scan to folder stops working

Scan to folder depends on the printer being able to reach a shared folder and having permission to write to it. It breaks when the password on the account used for the share is changed, when the target computer’s address changes because it is on a dynamic IP, when the folder is moved or renamed, or when a Windows update changes which file-sharing protocols are enabled. Older devices that only speak outdated versions of the SMB file-sharing protocol are increasingly awkward for exactly that reason — modern operating systems disable those older versions by default for security.

Setting it up so it keeps working

A little care at setup saves a great deal of troubleshooting later. Before an engineer or your IT provider configures anything, decide the following:

• The destination. Email, a shared folder, or both — and whether scans should reach individuals or a single monitored inbox or folder.
• A dedicated account. A mailbox or service account used only by the device, with a password that is documented and not tied to an employee.
• A fixed address for the machine. A static IP or a reserved address on your router keeps the printer findable and keeps folder paths stable.
• Default file format. PDF suits most business documents; searchable PDF is far more useful if you ever need to find text inside old scans.
• Default resolution and colour mode. Greyscale at a moderate resolution is fine for ordinary paperwork and keeps files small enough to email.
• Who maintains the address book. Shared address books drift quickly if nobody owns them.

Keeping scan quality and file sizes sensible

Higher resolution is not automatically better. Scanning ordinary text documents at a very high resolution in full colour produces large files that clog inboxes and are slower to send, without making the text any easier to read. Reserve high resolution and colour for photographs, plans and artwork, and set the everyday default lower.

If scans come out with lines down them while copies from the glass look fine, the cause is usually dirt on the narrow strip of glass the document feeder passes over rather than a fault in the scanner. Cleaning that strip with a soft lint-free cloth resolves a surprising number of reported scanner faults. Feed rollers that have gone glazed or dusty cause the other common complaint — skewed pages and double feeds through the document feeder.

When it is worth getting help

Scanning sits on the boundary between the printer and your IT setup, which is why it often falls between two stools. If your machine has stopped sending and nobody is sure whether the problem is the device, the mail platform or the network, that is exactly the sort of thing worth handing over. Configuring scanning properly across a fleet is a normal part of managed print services, alongside keeping firmware, address books and security settings consistent from one machine to the next.

We look after Konica Minolta, Ricoh and Xerox machines for businesses across England, and when you call you speak to the engineer rather than a call centre. If scanning has stopped working and you would rather not spend an afternoon on it, ring 07730 330415 or use our contact page and we will talk it through.