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...