Hi, I'm receiving messages similar to the following on three mail servers on two separate networks with postfix-2.9:
Dec 24 11:33:10 mail02 postfix/smtpd[8603]: too many errors after DATA from unknown[23.92.90.231] Dec 24 11:48:06 mail01 postfix/smtpd[14470]: too many errors after RCPT from mail.virtualarmor.com[64.92.219.81] I've researched the smtp_*_error_limit variables and people's recommendations to adjust them, but I don't understand why they are being generated. Could it at all be related to sqlgrey? There are quite a lot of them, more as the servers become more busy, but from what I understand they're not due to network congestion? I've read the postconf page on this, but apparently don't understand the description. It doesn't explain why these messages would be produced in the first place, and if I should investigate the cause more deeply. Any help greatly appreciated. Thanks, Alex
