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Q0738
Nigel Metheringham edited this page Nov 29, 2012
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How can I configure Exim to delay the SMTP connection if more than 10 invalid recipients are received in one message?
Put something like this in your RCPT ACL:
deny message = Max $rcpt_fail_count failed recipients allowed
condition = ${if >{$rcpt_fail_count}{10} {1}}
! verify = recipient
delay = ${eval: $rcpt_fail_count * 10}s
log_message = $rcpt_fail_count failed recipient attempts
This example increases the delay for each failed recipient.
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