Add enhanced code functions for reject and disconnect

io_getline returns a pointer, not a number

Turn fcrdns into an enum

SIZE_MAX doesn't fit inside the long long of strtonum

Add ": " before errno string

Whitespace and long line cleanup

Add osmtpd_err{,x}. A drop in replacement for err{,x}, but it does not prepend the __progname

Add an additional local_message. While here move the callback function up in osmtpd_tx_commit, so the caller has all the info

Make need a single-parameter function

Remove opensmtpd_priv.h header include

s/RB_PROTOTYPE/RB_PROTOTYPE_STATIC/

Move opensmtpd_priv.h into opensmtpd.c. It's not going to be used outside the file

Add osmtpd_filter_rewrite

s/ctx->mailfrom/mailfrom/

Cleanup headers

Import libopensmtpd