* Ralf Hildebrandt <ralf.hildebra...@charite.de>:

> But the real question is: Why is SA not seeing all the headers?

Looking at the archives, I find this:
https://lists.gt.net/spamassassin/users/172198

"Specifically, I have been adding characters and addresses to the list of
email addresses in the To: header to see at what point my rule stops
being hit. As far as I can tell, it is a byte limit, not a number of
email addresses limit. 

The byte limit (at least in my configuration) seems to be approximately
8KB"

And:

"Pretty sure it's hardcoded at 8k. This was done several years ago to
protect against DoS type situations."

If that's the case, is that limit still up-to-date?

The default in Postfix (bytes):

# postconf -d header_size_limit
header_size_limit = 102400

But curently we're using a conservativ 32KB instead.

-- 
Ralf Hildebrandt                   Charite Universitätsmedizin Berlin
ralf.hildebra...@charite.de        Campus Benjamin Franklin
https://www.charite.de             Hindenburgdamm 30, 12203 Berlin
Geschäftsbereich IT, Abt. Netzwerk fon: +49-30-450.570.155

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