diff --git a/mod/item.php b/mod/item.php
index 7d9cdb0286..30cb010608 100644
--- a/mod/item.php
+++ b/mod/item.php
@@ -393,7 +393,8 @@ function item_post(App $a) {
 
 	// Personal notes must never be altered to a forum post.
 	if ($posttype != Item::PT_PERSONAL_NOTE) {
-		$body = BBCode::performWithEscapedTags($body, ['noparse', 'pre', 'code', 'img'], function ($body) use ($profile_uid, $network, $str_contact_allow, &$inform, &$private_forum, &$private_id, &$only_to_forum, &$forum_contact) {
+		// Convert mentions in the body to a unified format
+		$body = BBCode::performWithEscapedTags($body, ['noparse', 'pre', 'code', 'img'], function ($body) use ($profile_uid, $network, &$inform) {
 			$tags = BBCode::getTags($body);
 
 			$tagged = [];
@@ -405,36 +406,45 @@ function item_post(App $a) {
 					continue;
 				}
 
-				/* If we already tagged 'Robert Johnson', don't try and tag 'Robert'.
-				* Robert Johnson should be first in the $tags array
-				*/
+				// If we already tagged 'Robert Johnson', don't try and tag 'Robert'.
+				// Robert Johnson should be first in the $tags array
 				foreach ($tagged as $nextTag) {
 					if (stristr($nextTag, $tag . ' ')) {
 						continue 2;
 					}
 				}
 
-				if ($success = ItemHelper::replaceTag($body, $inform, local_user() ? local_user() : $profile_uid, $tag, $network)) {
-					if ($success['replaced']) {
-						$tagged[] = $tag;
-					}
-					// When the forum is private or the forum is addressed with a "!" make the post private
-					if (!empty($success['contact']['prv']) || ($tag_type == Tag::TAG_CHARACTER[Tag::EXCLUSIVE_MENTION])) {
-						$private_forum = $success['contact']['prv'];
-						$only_to_forum = ($tag_type == Tag::TAG_CHARACTER[Tag::EXCLUSIVE_MENTION]);
-						$private_id = $success['contact']['id'];
-						$forum_contact = $success['contact'];
-					} elseif (!empty($success['contact']['forum']) && ($str_contact_allow == '<' . $success['contact']['id'] . '>')) {
-						$private_forum = false;
-						$only_to_forum = true;
-						$private_id = $success['contact']['id'];
-						$forum_contact = $success['contact'];
-					}
-				}
+				ItemHelper::replaceTag($body, $inform, local_user() ? local_user() : $profile_uid, $tag, $network);
 			}
 
 			return $body;
 		});
+
+		// Search for forum mentions
+		if (!$toplevel_item_id) {
+			foreach (Tag::getFromBody($body) as $tag) {
+				$contact = Contact::getByURL($tag[2], false, [], $profile_uid);
+				if ($contact['contact-type'] != Contact::TYPE_COMMUNITY) {
+					continue;
+				}
+
+				if (!empty($contact['prv']) || ($tag[1] == Tag::TAG_CHARACTER[Tag::EXCLUSIVE_MENTION])) {
+					$private_forum = $contact['prv'];
+					$only_to_forum = ($tag[1] == Tag::TAG_CHARACTER[Tag::EXCLUSIVE_MENTION]);
+					$private_id = $contact['id'];
+					$forum_contact = $contact;
+					Logger::info('Private forum or exclusive mention', ['url' => $tag[2], 'mention' => $tag[1]]);
+				} elseif ($str_contact_allow == '<' . $contact['id'] . '>') {
+					$private_forum = false;
+					$only_to_forum = true;
+					$private_id = $contact['id'];
+					$forum_contact = $contact;
+					Logger::info('Public forum', ['url' => $tag[2], 'mention' => $tag[1]]);
+				} else {
+					Logger::info('Post with forum mention will not be converted to a forum post', ['url' => $tag[2], 'mention' => $tag[1]]);
+				}
+			}
+		}
 	}
 
 	$original_contact_id = $contact_id;
diff --git a/src/Model/Tag.php b/src/Model/Tag.php
index 3020a2f293..17a68f120f 100644
--- a/src/Model/Tag.php
+++ b/src/Model/Tag.php
@@ -206,6 +206,27 @@ class Tag
 		self::store($uriid, $type, $name, $url, $probing);
 	}
 
+	/**
+	 * Get tags and mentions from the body
+	 * 
+	 * @param string  $body    Body of the post
+	 * @param string  $tags    Accepted tags
+	 *
+	 * @return array Tag list
+	 */
+	public static function getFromBody(string $body, string $tags = null)
+	{
+		if (is_null($tags)) {
+			$tags =  self::TAG_CHARACTER[self::HASHTAG] . self::TAG_CHARACTER[self::MENTION] . self::TAG_CHARACTER[self::EXCLUSIVE_MENTION];
+		}
+
+		if (!preg_match_all("/([" . $tags . "])\[url\=([^\[\]]*)\]([^\[\]]*)\[\/url\]/ism", $body, $result, PREG_SET_ORDER)) {
+			return [];
+		}
+
+		return $result;
+	}
+
 	/**
 	 * Store tags and mentions from the body
 	 * 
@@ -216,13 +237,10 @@ class Tag
 	 */
 	public static function storeFromBody(int $uriid, string $body, string $tags = null, $probing = true)
 	{
-		if (is_null($tags)) {
-			$tags =  self::TAG_CHARACTER[self::HASHTAG] . self::TAG_CHARACTER[self::MENTION] . self::TAG_CHARACTER[self::EXCLUSIVE_MENTION];
-		}
-
 		Logger::info('Check for tags', ['uri-id' => $uriid, 'hash' => $tags, 'callstack' => System::callstack()]);
 
-		if (!preg_match_all("/([" . $tags . "])\[url\=([^\[\]]*)\]([^\[\]]*)\[\/url\]/ism", $body, $result, PREG_SET_ORDER)) {
+		$result = self::getFromBody($body, $tags);
+		if (empty($result)) {
 			return;
 		}