[Dovecot] When the subject portion of an e-mail contains a control character, dovecot.sieve terminates unexpectatedly.

[Milan Cvetkovic]

Timo Sirainen wrote:

> Is there a reason why mails contain these kind of control characters? Is it commonly used? And is it OK if Dovecot translates them to UTF-8 for the rewritten header, or would the subject have to stay ISO-2022-JP encoded?

Some spammers may like to core dump our servers :-)