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csdhiman

08-07-2007 07:15 AM

Postfix mail queue problem

I am using Postfix on rhl9.0
I am facing problem related to mail queue on server
may be it is due to spam mails it was 13225 when i checked. so the mails are so slow

in postfix main.cf
default_process_limit is 900
smtpd_timeout = 300s

when i use command
# netstat -an |grep <Server ip>:25 |grep ESTABLISHED

then there was 250 ESTABLISHED connections
when i telnet on server's 25 port then it give response after 10 seconds

what this outut means ,is it due to spam ?

pls sugest

gani	08-07-2007 07:32 AM

Try to add the lines below in your main.cf and this will greatly limit/reject connections from spammers and at the same time add postgrey.

Code:

smtpd_helo_required = yes

smtpd_helo_restrictions =

        permit_mynetworks

        permit_sasl_authenticated

        reject_invalid_hostname

        reject_non_fqdn_hostname

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