post last sendmail upgrade

[Mark.Andrews at isc.org]

> On Thu, Apr 17, 2003, Mark.Andrews at isc.org wrote:
> > 
> > 	I've noticed email corruption post the last upgrade to sendmail
> > 	committed to stable.  Is anyone else experiencing this?
> 
> What kind of corruption?
> 
> You may want to follow the advise in the last sentence:
> 
> 	To provide partial protection for internal, unpatched MTAs that may be
> 		performing 7->8 or 8->7 bit MIME conversions, the default
> 		for MaxMimeHeaderLength has been changed to 2048/1024.
> 		Note: this does have a performance impact, and it only
> 		protects against frontal attacks from the outside.
> 		To disable the checks and return to pre-8.12.9 defaults,
> 		set MaxMimeHeaderLength to -1/-1.
> 
> It seems that the MaxMimeHeaderLength checks remove '\0' under
> certain circumstances.

One wonders why src/etc/sendmail/freebsd.mc has:

define(`confMAX_MIME_HEADER_LENGTH', `256/128')

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--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at isc.org