Accept bare DKIM public-key pastes without v=DKIM1 prefix.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/mail-dns/mail-dns.ts

@@ -44,9 +44,18 @@ export function parseDkimPaste(
   let text = (txtMatch ? txtMatch[0] : blob).trim();
   text = text.replace(/^"+|"+$/g, '').replace(/\s+/g, ' ').replace(/[.\s]+$/g, '').trim();
   if (!/^v=DKIM1/i.test(text)) {
-    throw new Error(
-      `Could not find a v=DKIM1 value in the ${expectedKind} field. Paste the TXT value or Stalwart zone line.`,
-    );
+    // Stalwart sometimes copies only the public key / p=… body.
+    const bare = text.replace(/^p=/i, '').replace(/\s+/g, '');
+    if (/^[A-Za-z0-9+/=]+$/.test(bare) && bare.length >= 20) {
+      text =
+        expectedKind === 'ed25519'
+          ? `v=DKIM1; k=ed25519; h=sha256; p=${bare}`
+          : `v=DKIM1; k=rsa; h=sha256; p=${bare}`;
+    } else {
+      throw new Error(
+        `Could not find a v=DKIM1 value in the ${expectedKind} field. Paste the TXT value or Stalwart zone line.`,
+      );
+    }
   }
 
   const kind = /k=ed25519/i.test(text)