Milter-greylist

Both of my Solaris sendmail gateways started to have some problems since Oct.14 when the "Possible SMTP attack: command=HELO/EHLO, count=3" appeared.

- Sendmail stops repsonding for a short time then came back, this happens several times a day

- milter-greylist process died, then it came back on by itself in about 5 minutes, this also happens serveral times a day

- I can't fine /var/milter-greylist/milter-greylist.sock on one of my two servers, should I copy this file over? (It's size is zero and has a special permission settings srwxr-xr-x)

Some error messages (random picks, not in any orders):

milter-greylist: [ID 552762 mail.error] greylist: accept() returned invalid socket (Too many open files)
milter-greylist: [ID 879519 mail.warning] greylist: setsockopt() failed

Milter (greylist): timeout before data read
Milter (greylist): init failed to open

Milter (greylist): error connecting to filter: Connection refused by /var/milter-greylist/milter-greylist.sock

mimedefang-multiplexor[12219]: [ID 260045 mail.error] Reap: Idle slave 9 (pid 25739) exited normally with status 255 (SLAVE DIED UNEXPECTEDLY)

mimedefang-multiplexor[12219]: [ID 389462 mail.error] Slave 6 died prematurely -- check your filter rules
mimedefang[12232]: [ID 847421 mail.error] Error from multiplexor: ERR No response from slave
mimedefang[27731]: [ID 758488 mail.warning] mfconnect: Error communicating with multiplexor

mimedefang-multiplexor[27727]: [ID 980602 mail.info] Slave 5 stderr: getservbyname failed for tcp at /usr/local/bin/mimedefang.pl line 529

; sendmail[18155]: [ID 801593 mail.warning] k9RFFCUM018155: collect: premature EOM: unexpected close