Mechiel Lukkien 50c13965a7
include full smtp response in dsn on errors
we now keep track of the full smtp error responses, potentially multi-line. and
we include it in a dsn in the first free-form human-readable text.

it can have multiple lines in practice, e.g. when a destination mail server
tries to be helpful in explaining what the problem is.
2024-02-14 23:37:43 +01:00
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