spam asesino sigue llenando mis loggings?

Configuro spam assassin como en https://elprespufferfish.net/blog/aws,mail/2015/09/03/mail-server-ec2.html

Pero después de habilitarlo invariablemente sigue llenando mis loggings muy rápido con:

un 7 22:33:51 www spamc[3322]: skipped message, greater than max message size (512000 bytes) Jun 7 22:33:51 www sendmail[3323]: v57MXpDw003323: Authentication-Warning: www.mydomain.com: spamd set sender to MAILER-DAEMON using -f Jun 7 22:33:51 www postfix/local[31485]: CA42C63FEC: to=<root@mydomain.com>, orig_to=<MAILER-DAEMON@www.mydomain.com>, relay=local, delay=0.01, delays=0/0/0/0.01, dsn=2.0.0, status=sent (delivenetworking to mailbox) Jun 7 22:33:51 www postfix/qmgr[20921]: CA42C63FEC: removed Jun 7 22:33:51 www sendmail[3323]: v57MXpDw003323: from=MAILER-DAEMON, size=3279782, class=0, nrcpts=1, msgid=<201706072233.v57MXpES003319@www.mydomain.com>, relay=spamd@localhost Jun 7 22:33:51 www postfix/smtpd[3077]: connect from www.mydomain.com[127.0.0.1] Jun 7 22:33:51 www postfix/smtpd[3077]: DDEFD63FEC: client=www.mydomain.com[127.0.0.1] Jun 7 22:33:51 www postfix/cleanup[3181]: DDEFD63FEC: message-id=<201706072233.v57MXpES003319@www.mydomain.com> 

También veo:

 www sendmail[11346]: v57MfPeF011346: SYSERR(spamd): Too many hops 27 (25 max): from MAILER-DAEMON@www.mydomain.com via localhost, to MAILER-DAEMON@www.grabaguru.com Jun 7 22:41:25 www sendmail[11346]: v57MfPeF011346: v57MfPeG011346: DSN: Too many hops 27 (25 max): from MAILER-DAEMON@www.mydomain.com via localhost, to MAILER-DAEMON@www.mydomain.com 7 22:41:25 www postfix/smtpd[11155]: connect from www 

Y:

 maillog-20170604:Jun 2 07:31:15 www spamd[5200]: spf: lookup failed: addr is not a string at /usr/share/perl5/vendor_perl/IO/Socket/IP.pm line 662. 

¿Qué configuré mal? Esto está en AWS (services AMI del amazon de la tela).