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Subscribe2: too much MIME prevents mails being sent…

Today I added the subscribe2 plugin to this blog, which in fact is very nice (hey you – are you subscribed yet?) to notify users of new posts. But when I took the first dry run trying to subscribe and confirm my account, no mail has been sent. Well, in fact the logfiles of my mailserver proved me wrong: the mail was rejected because of a BAD HEADER error since the MIME version was noted twice and therefore my mailserver decided to dump it.

Due to the fact that that many sysadmins have hardened their security because of spam and virus waves, it is a good idea to check on the error, which in fact resides in wp-content/plugins/subscribe2/subscribe2.php. Just comment out the line

$headers .= "MIME-Version: 1.0\n";

and you’re safe.

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