[Gllug] SPAM - trying to block at SMTP level

[Henrik Morsing]

I've run the below configuration for more than two years and up until
November last year I hadn't recieved any spam emails. I get 20-30 attempts
a day but they're rejected at the SMTP level. Over the last few months
I've recieve about 5 spam emails sent from Hotmail which this won't block.

smtpd_helo_required = yes
#smtpd_helo_restrictions = permit_mynetworks, reject_invalid_hostname,
reject_un
known_hostname, reject_non_fqdn_hostname
#smtpd_sender_restrictions = permit_mynetworks,
reject_unknown_sender_domain, re
ject_non_fqdn_sender, reject_sender_login_mismatch
smtpd_sender_restrictions = permit_sasl_authenticated, permit_mynetworks,
reject
_unknown_sender_domain, reject_non_fqdn_sender
smtpd_delay_reject = yes
smtpd_recipient_restrictions =  permit_sasl_authenticated,
permit_mynetworks, re
ject_unauth_destination, check_policy_service unix:private/policy

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