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Hello,I'm having an issue where a particular owner of a domain(IP 202.123.27.157) is getting a bad reputation from senderbase. The IP is not in any blacklists and the owner does use authentication for sending out mails.Given that i implemented a few ...
Hello,I have installed several IronPorts at customer sites and when checking the units, i always see "message aborted" in mail_logs. Sometimes it's might be bad senders and it's normal that the conenction is dropped.But many times it just seemed that...
Hello,We've got a C350 installed at an ISP customer and recently, they've started to experience some major mail receiving problems with a specific domain(one of their major partners).Connections are lost and some even get the 501 5.5.4 Invalid Addres...
Hello,I manage an ISP network with several C-Series appliances and as you might be aware, there are much infected hosts on ISP networks and therefore they send out spam.This results in getting the outgoing IronPort IPs blacklisted.I'm having some dif...
Hello,Since a few days, i'm having a mail delivery issue where mails are queuing on the IronPort and being delayed for delivery.This is irrespective of any recipient domains.The IronPort sends mail directly to a Cisco Router 1700 series, which is als...
Hi,I told the client to disable smtp fixup on the PIX. So, now both are disabled, but problem is still here.What is amazing is that it happens only intermittently when sending some large files. All the test mails we sent, was received without problem...
Hello,I did get a C350 and routed only outgoing mails for the entire ISP network on it with the SenderBase IP Profiling turned OFF on the listener and i noticed that it effectively reduced the number of false positives.I should note that we do have s...
Thanks to all,I should be getting a C350 for this client by next week and i shall configure an outbound listener and disable the senderbase profiling and see how it works.I'll keep you updated on the outcome.Rgds,Vinesh
Hello again,Well interesting.IN fact, i did create 2 relaylists. 1 with corporate clients IP range and another with home users(ADSL, Dial-up,etc having dynamic IPs). I've enabled strict rate-limiting on the second relaylist and i should say that we ...
Don,I did contact Support and sent them some samples of the false positives.They found out that the mails coming from teh subscribers are from blacklisted IPs(they also have very bad SBRS) and IPAS also evaluate this info about the blacklisted IP in ...
