Is this a known condition, and is there a workaround?
I'm trying to monitor six university email systems with SMTP2POP, sending through smtp.sbdglobal.net. This effectively tests our sendmail mail exchanger, our anti-spam & anti-virus systems, and the Exchange store. Using POP exercises the Exchange front-end. After a cycle or two, I get the following:
SMTP: 451 4.7.7 Mail access temporarily suspended for 69.234.144.113**BCMI**pimout2
SBC's tech support cannot tell me what limit I am triggering, so I have no idea what to change to avoid the problem. I started out with a cycle of 1 minute. With "2nd knock" on, this means SA should page when a problem has existed for no more than 4 minutes. As the cycle gets longer, a problem can exist for longer before SA recognizes it.
Any suggestions?
Thanks
