sendmail: from Vladimir:

sendmail: from Vladimir:
Here comes the third part of compatibility patch for sendmail.
* Introduced new safe_getdomainname() -- will it be useful?
* Fixed SEGV if sender address is missed. Should snoop for sender address in mail headers?
* More compat: use HOSTNAME instead of HOST when no server is explicitly specified.
* crond: fixed mail recipient address.

function                                             old     new   delta
safe_getdomainname                                     -      56     +56
sendgetmail_main                                    1937    1946      +9
grep_file                                            846     850      +4
crond_main                                          1423    1425      +2
xstrtoull_range_sfx                                  295     296      +1
utoa_to_buf                                          110     108      -2
passwd_main                                         1053    1049      -4
sv_main                                             1234    1228      -6
parse_expr                                           841     833      -8
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(add/remove: 1/0 grow/shrink: 4/4 up/down: 72/-20)             Total: 52 bytes