Ok after some days of running again we have the same thing:
Under SMTP Virtual Server Queues there is a yahoo.com.tw Queue with thousands of mails waiting to be delivered, prolly spams.
I would really like to know if there was a way to prevent all that spam without a 3rd party software involved. I tried to change my connection properties under Default SMTP Virtual Server – properties – connection , and i prohibited access to the specified IP BUT THEY KEEP COMING. I also noticed that when I Denied access to that ip, another hundred of Queues started from something like: msa32.hinet.com ms77.hinet.com ms45.hinet.com etc etc… enumerating some msgs from a random hinet.com queue i noticed that the recipients list was full of @yahoo.com.tw… Some of all those msgs are frozen and some of them have a failure delivery range of 10 ro 80 tries….
Checking a whois output hinet.com is an ISP provider at TW.
Could you please help me to avoid all that spam once and for all please ?!
How can i block them without blocking usefull mails too ? if i deny access to hinet.com it will reject even good mails from coming to our server too…. But the Queues like the msa32.hinet.com msa57 msa72 etc etc seem like there are several hosts sending all these who just connect to their isp… I dont want to ban whole hinet.com cause we do get EXPECTED emails from japan taiwan china. But I cant figure out what that is.
I really can’t figure out why SMTP virtual server still puts my denied list of IP E-mail Senders to Queues.
