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-rw-r--r--program/include/rcube_message.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/program/include/rcube_message.php b/program/include/rcube_message.php
index fd42e4ad4..2b793c441 100644
--- a/program/include/rcube_message.php
+++ b/program/include/rcube_message.php
@@ -469,7 +469,7 @@ class rcube_message
$this->parse_structure($mail_part, true);
}
// is a regular attachment
- else if (preg_match('!^[a-z0-9-.+]+/[a-z0-9-.+]+$!i', $part_mimetype)) {
+ else if (preg_match('!^[a-z0-9-.+_]+/[a-z0-9-.+_]+$!i', $part_mimetype)) {
if (!$mail_part->filename)
$mail_part->filename = 'Part '.$mail_part->mime_id;
$this->attachments[] = $mail_part;