Hi, Ok I've been successfully running an email server for the past 2 years using the following: - Debian Sarge - 2.4.27 smp kernel - courier-pop, courier-imap, courier-authmysql - postfix-mysql, postfix-tls - maildrop, maildropmysql - spamassassin - clamav - amavisd Basically it handles multiple domains, for virtual users, virus/spam protection, etc. Now I've just been doing some cleaning up everything, and trying to get it run more efficiently, as I'm going to be setting up a new server soon. I was looking at the mysql.log (/var/mysql/mysql.log), that I had turned on, and interesting was seeing multiple queiries for every email that the server received. Here's an example, I was sending an email from an external address, to an address on the server: Code: 060705 13:11:10 111 Query select remote_address from email_aliases where email = 'xxxxx.co.nz' 112 Query select maildir from email_addresses where email = 'xxxxx.co.nz' 113 Query select transport from email_domains where domain = 'xxxxx.co.nz' 113 Query select transport from email_domains where domain = 'co.nz' 113 Query select transport from email_domains where domain = 'nz' 113 Query select transport from email_domains where domain = '[email protected]' 113 Query select transport from email_domains where domain = 'xxxxx.co.nz' 113 Query select transport from email_domains where domain = '.co.nz' 113 Query select transport from email_domains where domain = '.nz' 114 Query select remote_address from email_aliases where email = '[email protected]' 114 Query select remote_address from email_aliases where email = '@xxxxx.co.nz' 115 Query select remote_address from email_aliases where email = '[email protected]' 115 Query select remote_address from email_aliases where email = '@xxxxx.co.nz' And another list of queries 1 second later: Code: 060705 13:11:11 111 Query select remote_address from email_aliases where email = 'xxxxx.co.nz' 112 Query select maildir from email_addresses where email = 'xxxxx.co.nz' 113 Query select transport from email_domains where domain = 'xxxxx.co.nz' 113 Query select transport from email_domains where domain = 'co.nz' 113 Query select transport from email_domains where domain = 'nz' 113 Query select transport from email_domains where domain = '[email protected]' 113 Query select transport from email_domains where domain = 'xxxxx.co.nz' 113 Query select transport from email_domains where domain = '.co.nz' 113 Query select transport from email_domains where domain = '.nz' 118 Query select remote_address from email_aliases where email = '[email protected]' 118 Query select remote_address from email_aliases where email = '@xxxxx.co.nz' 115 Query select remote_address from email_aliases where email = '[email protected]' 115 Query select remote_address from email_aliases where email = '@xxxxxx.co.nz' 123 Connect [email protected] on 123 Init DB xxxxx 123 Query SELECT email, uidnumber, gidnumber, maildir, maildir, quota FROM email_addresses WHERE email = "m [email protected]" "" 123 Quit Now why would there be soo many queries, firstly checking the sender email address against the transport table, and then checking each part of the email (before the @, after the @, and the tld's). I don't think its maildrop, as there is only 1 mysql query from maildrop, the last one. So I'm assuming its something to do with postfix, as before those logs above its connecting as postfix: "Connect [email protected] on xxxxx". So has anyone seen this before? Multiple queries for just one incoming email? Meaning the mysql server is doing far more than it should have to. Courier-mysql seems to be ok, as I only get 1 query in the log when I check my email. Thanks, any help, advice, or comments would be greatly appreciated. Mike.
Hi I used too debian sarge and I have postfix+mysql+spamassassin,amavisd-new,clamav... I try running maildrop + mysql but it's not working How you compiled maildrop with mysql, from source? Can you write your configurations about maildropmysql and mai.cf,master.cf? Regards, osanet
I think it's normal. Postfix has to do a lot of lookups to decide where to deliver the mail. As long as you don't see any errors in your mail log I wouldn't worry about it.
Thanks. Well there are no errors, so guess I won't worry about it for now. Maybe if I get time I can look into it futher, as it would be nice to get postfix to cut down on mysql queries. Its doing on average 100 per minute with all the email its handling.
