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[7.507] More spam than usual getting through?

Ifor Davies
Is anyone else having this trouble? For the past week, a lot more spam than usual seems to be getting through to our users. For example, some users who were receiving four or five spam emails a day are suddenly seeing fifty to a hundred a day.

Looking at the SMTP log in Mail Manager, I can see lots of emails being blocked with Rejected: RBL and Rejected: RDNS/HELO, and even some with Rejected: Spam (but not as many as normal, I suspect).

I'm trying to work out whether someone has recently discovered a new way of getting round the spam filter, or whether there's a problem with my Astaro box. So, is anyone else seeing this problem?

Ifor


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  • 0
    spam is being detected if the mail arrives at the external interface of the Astaro box, but not if it arrives at an internal interface.

    If the mail doesn't come through the External interface, the Astaro never sees it; when it has another route into your LAN, it goes straight to the mail server.  Even if you were to put static routes into the Astaro and your router handling the other WAN connection to get the mail through the Internal interface, I don't know if Astaro SMTP Proxy would "look" at the mail coming in there - I think it only sends/receives viaa the interface with a default gateway.

    If you configure the backup-mx to send via your External interface, it will hold email and deliver it as soon as your connection is back up.

    I bet you can connect your other ISP to the Astaro also, and use Uplink Balancing to achieve what you want to do. We don't know enough about your network to propose any specific solutions.  If your Astaro reseller has a strong ACE with good network knowledge, it might be worth investing in a half-day of that person's time to do this for you.

    Cheers - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
  • 0 in reply to BAlfson
    in my case, i have the backup-mx hosted at dyndns and they send the mails to our normal smtp port on my asg. until two weeks ago this worked fine for over two years.

    i'm also not subscribed to premier support but astaro was so friendly to help me because my reseller is not answering to my problems. seems like the like to sell astaro licences but nothing more!

    the astaro support is now trying to find the problem but it seems to be a long procedure... i will give you more infos asap.

    best regards
    mike
  • 0 in reply to ionee
    Ifor, if your reseller won't / can't help directly (if they lack technical skill, etc.), they can start an official Astaro case for you ... insist that they do that as a minimum.  That's part of what they agreed to, to become resellers.  We certainly try to help our customers directly, but on some occasions I hand off a case to Astaro, it's real simple to start a case on behalf of a customer.

    Mike, I'll be interested in what they figure out... this is a wierd one to be sure.

    CTO, Convergent Information Security Solutions, LLC

    https://www.convergesecurity.com

    Advice given as posted on this forum does not construe a support relationship or other relationship with Convergent Information Security Solutions, LLC or its subsidiaries.  Use the advice given at your own risk.

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  • 0 in reply to ionee
    Ifor, if your reseller won't / can't help directly (if they lack technical skill, etc.), they can start an official Astaro case for you ... insist that they do that as a minimum.  That's part of what they agreed to, to become resellers.  We certainly try to help our customers directly, but on some occasions I hand off a case to Astaro, it's real simple to start a case on behalf of a customer.

    Mike, I'll be interested in what they figure out... this is a wierd one to be sure.

    CTO, Convergent Information Security Solutions, LLC

    https://www.convergesecurity.com

    Advice given as posted on this forum does not construe a support relationship or other relationship with Convergent Information Security Solutions, LLC or its subsidiaries.  Use the advice given at your own risk.

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