X-Git-Url: https://git.notmuchmail.org/git?a=blobdiff_plain;f=howto.mdwn;h=d0219949c6f7a2f2149dcd8f2e1ad2bd450fa5ec;hb=ff710ebdc63bf973825fc47dd985bcbfcc75334e;hp=c71212477748d327dba4a081a928905fb0fa5737;hpb=a9ad99631a50bde3181cf94327c52883cc7af138;p=notmuch-wiki

diff --git a/howto.mdwn b/howto.mdwn
index c712124..d021994 100644
--- a/howto.mdwn
+++ b/howto.mdwn
@@ -126,6 +126,11 @@ output.  Using the instructions from [Gmane's
 site](http://gmane.org/export.php), we can download an mbox file, which we
 can then convert to maildir using mb2md or other utility.
 
+Please note that mail delivered by Postfix will have envelope headers
+that may cause notmuch to complain about "single-message mbox files".
+Removing the first line from the message or passing it through
+reformail will solve the problem.
+
 ## <span id="special_tags">**Take advantage of tags that are special to notmuch**</span>
 
 See [[tags special to notmuch|special-tags]].