I have had a perfect Debian Nginx server up for a few months. Reciently I stopped receiving emails but can still send to a gmail account. When I looked at /var/log/mail.err .info or .log they were huge, take a long time to cat, are loaded with tons of unknown email addresses and are being rejected by other servers. mail.log HTML: Nov 23 23:07:02 server1 postfix/smtp: 8E6EAE81C89: to=<[email protected] mail.info HTML: Nov 23 21:32:04 server1 postfix/smtp: 6D293E80F9B: to=<[email protected] mail.err HTML: Nov 24 06:32:06 mr1 amavis: (25978-01) (!!)TROUBLE in process_request: connect_to_sql: unable to connect to any dataset at (eval 111) line 247. Nov 24 06:42:24 mr1 dovecot: auth-worker(27303): Error: mysql(localhost): Connect failed to database (dbispconfig): Too many connections - waiting for 1 seconds before retry deleted this mailbox for troubleshooting HTML: Nov 24 07:22:57 mr1 dovecot: auth-worker(32186): Error: sql([email protected] How do I fix and prevent this problem? thanks.