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Maximum length of a header line?

From: Ralf Hildebrandt (Ralf.Hildebrandtcharite.de)
Date: Wed Jul 25 2007 - 04:57:25 CDT


dkim-filter pukes:
Jul 25 11:26:10 mail-ausfall dkim-filter[4550]: B93813DC16: dkim_eoh(): internal error from libdkim: header too large (max 4097)
and looking at the mail I see a user adding a shitload of E-Mail
addresses to the To:/CC: headers, instead of using the Bcc: headers.

So:
* Can I make postfix truncate the headers to a sensible amount of characters?
* Is there an RFC-imposed limit?

--
Ralf Hildebrandt (Ralf.Hildebrandtcharite.de) plonkcharite.de
Postfix - Einrichtung, Betrieb und Wartung Tel. +49 (0)30-450 570-155
http://www.arschkrebs.de
"How would you rate our government's incompetence?
Typical unix response: Unmatched ".