- RFC 822 requires the presence of at least one destination
message header. Postfix now generates a generic "To:
undisclosed-recipients:;" message header when no destination
header is present. The header content is specified with the
new undisclosed_recipients_header parameter.
- Postfix now understands <(comment)> as SMTP MAIL FROM address,
because some broken software needs it. Postfix rejects such
illegal address forms with "strict_rfc821_envelopes = yes".
- Configuration parameters for one mysql dictionary would become
default settings for the next one. This patch was merged into
the development Postfix version a while back but apparently
that version was on a dead branch. Update by Scott Cotton.
- Some Postfix delivery agents would abort on addresses of the
form `stuff@.' which could unfortunately be generated locally.
- With local delivery, Postfix could insert > or . into the middle
of very long lines.
- SMTP sessions could time out when the remote client attempted
to deliver to a large number of rejected recipients. The SMTP
server now flushes unwritten output in-between tarpit delays,
to avoid protocol timeouts in pipelined SMTP sessions.
- Postfix would incorrectly reject domain names with adjacent `-'
characters.
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