---
name: "qmail-tcpto"
section: "8"
platform: "linux"
package: "qmail"
version: "1.06-6.2~deb10u1"
release: "Debian 10 (Buster)"
platforms: ["linux"]
url: "https://new.carta.tech/qmail-tcpto"
---

# qmail-tcpto(8)

print TCP timeout table

## NAME

qmail-tcpto - print TCP timeout table

## SYNOPSIS

**qmail-tcpto**

## DESCRIPTION

After an SMTP connection attempt times out, **qmail-remote** records the relevant IP address. If the same address fails again (after at least two minutes with no intervening successful connections), **qmail-remote** assumes that further attempts will fail for at least another hour.

**qmail-tcpto** prints **qmail-remote**'s current list of timeouts.

**qmail-tcpto** must be run either as  **root** or with user id **qmailr** and group id **qmail**.

## SEE ALSO

[qmail-qread(8)](/qmail-qread/8.md), [qmail-remote(8)](/qmail-remote/8.md), [qmail-tcpok(8)](/qmail-tcpok/8.md)