diff --git a/docs/install.md b/docs/install.md
index 3911bc45..35a0e323 100644
--- a/docs/install.md
+++ b/docs/install.md
@@ -26,21 +26,21 @@ deb/rpm packages.
 
 === "x86_64/amd64"
     ```bash
-    wget https://github.com/binwiederhier/ntfy/releases/download/v1.12.0/ntfy_1.12.0_linux_x86_64.tar.gz
+    wget https://github.com/binwiederhier/ntfy/releases/download/v1.12.1/ntfy_1.12.1_linux_x86_64.tar.gz
     sudo tar -C /usr/bin -zxf ntfy_*.tar.gz ntfy
     sudo ./ntfy serve
     ```
 
 === "armv7/armhf"
     ```bash
-    wget https://github.com/binwiederhier/ntfy/releases/download/v1.12.0/ntfy_1.12.0_linux_armv7.tar.gz
+    wget https://github.com/binwiederhier/ntfy/releases/download/v1.12.1/ntfy_1.12.1_linux_armv7.tar.gz
     sudo tar -C /usr/bin -zxf ntfy_*.tar.gz ntfy
     sudo ./ntfy serve
     ```
 
 === "arm64"
     ```bash
-    wget https://github.com/binwiederhier/ntfy/releases/download/v1.12.0/ntfy_1.12.0_linux_arm64.tar.gz
+    wget https://github.com/binwiederhier/ntfy/releases/download/v1.12.1/ntfy_1.12.1_linux_arm64.tar.gz
     sudo tar -C /usr/bin -zxf ntfy_*.tar.gz ntfy
     sudo ./ntfy serve
     ```
@@ -88,7 +88,7 @@ Manually installing the .deb file:
 
 === "x86_64/amd64"
     ```bash
-    wget https://github.com/binwiederhier/ntfy/releases/download/v1.12.0/ntfy_1.12.0_linux_amd64.deb
+    wget https://github.com/binwiederhier/ntfy/releases/download/v1.12.1/ntfy_1.12.1_linux_amd64.deb
     sudo dpkg -i ntfy_*.deb
     sudo systemctl enable ntfy
     sudo systemctl start ntfy
@@ -96,7 +96,7 @@ Manually installing the .deb file:
 
 === "armv7/armhf"
     ```bash
-    wget https://github.com/binwiederhier/ntfy/releases/download/v1.12.0/ntfy_1.12.0_linux_armv7.deb
+    wget https://github.com/binwiederhier/ntfy/releases/download/v1.12.1/ntfy_1.12.1_linux_armv7.deb
     sudo dpkg -i ntfy_*.deb
     sudo systemctl enable ntfy
     sudo systemctl start ntfy
@@ -104,7 +104,7 @@ Manually installing the .deb file:
 
 === "arm64"
     ```bash
-    wget https://github.com/binwiederhier/ntfy/releases/download/v1.12.0/ntfy_1.12.0_linux_arm64.deb
+    wget https://github.com/binwiederhier/ntfy/releases/download/v1.12.1/ntfy_1.12.1_linux_arm64.deb
     sudo dpkg -i ntfy_*.deb
     sudo systemctl enable ntfy
     sudo systemctl start ntfy
@@ -114,21 +114,21 @@ Manually installing the .deb file:
 
 === "x86_64/amd64"
     ```bash
-    sudo rpm -ivh https://github.com/binwiederhier/ntfy/releases/download/v1.12.0/ntfy_1.12.0_linux_amd64.rpm
+    sudo rpm -ivh https://github.com/binwiederhier/ntfy/releases/download/v1.12.1/ntfy_1.12.1_linux_amd64.rpm
     sudo systemctl enable ntfy 
     sudo systemctl start ntfy
     ```
 
 === "armv7/armhf"
     ```bash
-    sudo rpm -ivh https://github.com/binwiederhier/ntfy/releases/download/v1.12.0/ntfy_1.12.0_linux_armv7.rpm
+    sudo rpm -ivh https://github.com/binwiederhier/ntfy/releases/download/v1.12.1/ntfy_1.12.1_linux_armv7.rpm
     sudo systemctl enable ntfy 
     sudo systemctl start ntfy
     ```
 
 === "arm64"
     ```bash
-    sudo rpm -ivh https://github.com/binwiederhier/ntfy/releases/download/v1.12.0/ntfy_1.12.0_linux_arm64.rpm
+    sudo rpm -ivh https://github.com/binwiederhier/ntfy/releases/download/v1.12.1/ntfy_1.12.1_linux_arm64.rpm
     sudo systemctl enable ntfy 
     sudo systemctl start ntfy
     ```
diff --git a/docs/publish.md b/docs/publish.md
index e3ef363b..063deeb1 100644
--- a/docs/publish.md
+++ b/docs/publish.md
@@ -752,9 +752,8 @@ Here's what that looks like on Android:
 
 ### Attach file from a URL
 Instead of sending a local file to your phone, you can use **an external URL** to specify where the attachment is hosted.
-This could be a Google Drive or Dropbox link, or any other publicly available URL. The ntfy server will briefly probe
-the URL to retrieve type and size for you. Since the files are externally hosted, the expiration or size limits from 
-above do not apply here.
+This could be a Dropbox link, a file from social media, or any other publicly available URL. Since the files are 
+externally hosted, the expiration or size limits from above do not apply here.
 
 To attach an external file, simple pass the `X-Attach` header or query parameter (or any of its aliases `Attach` or `a`)
 to specify the attachment URL. It can be any type of file. Here's an example showing how to upload an image:
diff --git a/server/server.go b/server/server.go
index f0250d96..8d8af37b 100644
--- a/server/server.go
+++ b/server/server.go
@@ -138,10 +138,8 @@ var (
 	errHTTPBadRequestMessageNotUTF8                  = &errHTTP{40011, http.StatusBadRequest, "invalid message: message must be UTF-8 encoded", ""}
 	errHTTPBadRequestAttachmentTooLarge              = &errHTTP{40012, http.StatusBadRequest, "invalid request: attachment too large, or bandwidth limit reached", ""}
 	errHTTPBadRequestAttachmentURLInvalid            = &errHTTP{40013, http.StatusBadRequest, "invalid request: attachment URL is invalid", ""}
-	errHTTPBadRequestAttachmentURLPeakGeneral        = &errHTTP{40014, http.StatusBadRequest, "invalid request: attachment URL peak failed", ""}
-	errHTTPBadRequestAttachmentURLPeakNon2xx         = &errHTTP{40015, http.StatusBadRequest, "invalid request: attachment URL peak failed with non-2xx status code", ""}
-	errHTTPBadRequestAttachmentsDisallowed           = &errHTTP{40016, http.StatusBadRequest, "invalid request: attachments not allowed", ""}
-	errHTTPBadRequestAttachmentsExpiryBeforeDelivery = &errHTTP{40017, http.StatusBadRequest, "invalid request: attachment expiry before delayed delivery date", ""}
+	errHTTPBadRequestAttachmentsDisallowed           = &errHTTP{40014, http.StatusBadRequest, "invalid request: attachments not allowed", ""}
+	errHTTPBadRequestAttachmentsExpiryBeforeDelivery = &errHTTP{40015, http.StatusBadRequest, "invalid request: attachment expiry before delayed delivery date", ""}
 	errHTTPNotFound                                  = &errHTTP{40401, http.StatusNotFound, "page not found", ""}
 	errHTTPTooManyRequestsLimitRequests              = &errHTTP{42901, http.StatusTooManyRequests, "limit reached: too many requests, please be nice", "https://ntfy.sh/docs/publish/#limitations"}
 	errHTTPTooManyRequestsLimitEmails                = &errHTTP{42902, http.StatusTooManyRequests, "limit reached: too many emails, please be nice", "https://ntfy.sh/docs/publish/#limitations"}
diff --git a/server/server_test.go b/server/server_test.go
index 7043a7cd..492edf91 100644
--- a/server/server_test.go
+++ b/server/server_test.go
@@ -814,7 +814,7 @@ func TestServer_PublishAttachmentExpiryBeforeDelivery(t *testing.T) {
 	err := toHTTPError(t, response.Body.String())
 	require.Equal(t, 400, response.Code)
 	require.Equal(t, 400, err.HTTPCode)
-	require.Equal(t, 40017, err.Code)
+	require.Equal(t, 40015, err.Code)
 }
 
 func TestServer_PublishAttachmentTooLargeBodyVisitorAttachmentTotalSizeLimit(t *testing.T) {