1 # bounce from long SMTP response
10 550-no mate\x0d\x0a550-123456789 100 123456789 a really long line to blow the limits 123456789 123456789 123456789 123456789 200 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 300 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 400 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 500 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 600 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 700 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 800 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 900 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 1000 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 1100 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789\x0d\x0a550 go away
29 exim -odi fred@undeliverable.org