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BeeOnLion

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Hi All

I am having an issue with SPAM showing up on an iPhone & not showing up in the mail client.
Has anyone come across this issue & found a solution?

We are using SPAM Assassin we have a tag score of 5 set up & a Block score of 7.5 this is catching the majority of SPAM emails.

I have set up some custom rules for see screen grab below.

[img]./fa/2559/0/[/img]

Is there something im missing? The majority of custom rules are sitting unused but are ticked as active

Thanks a million for the help in advance

[Updated on: Wed, 16 May 2012 13:14]

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freakinvibe

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Do these spam messages show up in Web Mail? If so, are they in the Junk-Mail folder or are they in the Inbox?

Dexion AG - The Blackberry Specialists in Switzerland
https://dexionag.ch
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BeeOnLion

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@freakinvibe thanks for getting back to me on this, some of the Spam messages show up in Web Mail in the main web mail inbox.

However other spam mails are being captured by the spam rules & being placed in Junk mail both in Web mail & in the mail client mail client (Apple Mail).

The majority of SPAM emails that are showing on the iPhone are not being captured by any spam rules & it looks like to me that no rules are in effect on the iPhone at all.... does the user need to train the iphone to detect these spam messages for example move to junk mail on iphone?


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freakinvibe

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I would not let iPhone or Apple Mail catch any Spam. If you let Server and Client catch Spam, it is an administrative nightmare to find out which system has catched what and when.

I would only let Kerio catch the Spam, which by default adds the **SPAM** to the subject and moves it to the Junk Mail folder.

As the iPhone is syncing with what's on the Server (= what you see on WebMail), you should see the same messages in the inbox on the iPhone as you see on WebMail.

If you are not happy and think that Kerio is not catching enough Spam, you should add DNSBLs, activate Spam repellent and SPF.

[Updated on: Wed, 16 May 2012 15:52]


Dexion AG - The Blackberry Specialists in Switzerland
https://dexionag.ch
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BeeOnLion

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@freakinvibe thanks again for getting back with your suggestions.

I am very happy with the SPAM setting that Kerio supply & they are catching lots of SPAM.

I have already enabled SPF on Kerio however I think at the moment there is no need to add DNSBL or Spam repellent just yet Smile

The SPAM that is getting thought the filters on to the iPhone is the biggest issue. We have 3 other iPhones in house all of which are not having any issues with spam leaking through onto the phones mailbox.

One of the 3 unaffected iphone is a very public email address & the Kerio SPAM filters are working very well in keeping out unwanted emails.

Is there any known issues with the IOS that is installed on iPhones?

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TorW

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Sorry, but I can't see how you can be very happy with the spam filters, but still complain about spam getting through. It doesn't make sense.

What you see on the iPhone (and in Outlook for that matter) is an exact replica of what you see in Webmail. It's sorta the point of ActiveSync (and KOFF), thus no spam can "leak through" to the iPhone as such. If you see spam in your iPhone's Inbox, you'll also see it in webmail's inbox.

If you see spam on the Iphone it's because the server didn't catch it - which in turn means your spam filters actually aren't working very well. You should look into configuring DNSBLs and turn on Spam Repellent. It's free, easy and a very cheap way of getting rid of even more spam than you do now. Anti-spam settings should be tightened to the point that a spam showing up in your inbox will surprise you.

Note: SPF is not a spam filter as such. It's mostly a way to minimize spam at other servers getting spams with fake from-addresses belonging on your server.
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BeeOnLion

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@TorW Thanks for getting back with your advice.

The SPAM filters are working great for all of the other mail boxes & for the other smart phones it just seems to be this one iPhone that is causing trouble.
So in that sense i am very happy with the performance of the filters. It would be a different matter if all spam was getting through Smile

Unfortunately what im seeing on the iPhone & Apple Mail is not an exact replica on what is being displayed on Webmail... the spam emails display on the iPhone & not on the Mail client & webmail which is very odd.

I know that if i am seeing spam on the iphone it is because the server didnt catch it, this is where the confusion is coming from.... I would have expected that as the rules are running so well on all other accounts & smart phones it should not be happening....so could it be caused by a sync issue, iOS issue etc>
I dont think it is a spam filter issue per say but more an issue with syncing etc but i cant be 100%

I must have a look at switching on Spam Repellent I was unaware that this was a free feature of Kerio & the more this helps reduce spam the better.

Also in relation to DNSBL's is there documentation on how to configure this on Kerio or is this something I will need to get my provider to configure or is it just blacklist settings (basic question i know)?

Thanks again



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scottwilkins

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BeOnLion,

Don't forget that many e-mail clients (like Outlook) have built in spam processing also. So something in the "inbox" in Kerio may still get pushed to a junk mail folder inside the client software.
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BeeOnLion

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@scottwilkins

Thanks for getting back to me ont his I have tried switching on Spam Repellent as suggest by <_at_>TorW & this seems to have reduced the amount of spam coming in quite a bit. However we are still getting some spam getting through to the iPhone & not to the webmail. I am still thinking its an issue to do with sync or the iOS but ill keep looking. Thanks for your advise about Outlook & mail client Junkmail ill keep an eye on it
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pcunix

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TorW wrote on Wed, 16 May 2012 14:52
Anti-spam settings should be tightened to the point that a spam showing up in your inbox will surprise you.



I have to agree with that!

I often run my Kerio server with just default settings so that I can see how it does without tweaking. It's amazing what the difference is when you tighten it up.

On blacklists: add spam score, don't block. Use other free or paid blacklists, too - not dozens, but add a few that seem sensible to you (find lists at Wikipedia - http://en.wikipedia.org/wiki/Comparison_of_DNS_blacklists ). What do you think the chances are of NOT being spam if they are on three separate blacklists? If you added 2 points for each, it's at 6 in that case..

The new body search for rules in 7.4 helps you get rid of those extra annoying things that aren't classical spam but might set your teeth grinding - I add points for "webmaster", "adding content" and "link" (because it's probably somebody asking me to link to their website).

Do what TorW says. Tighten it up.

Tony Lawrence
Kerio Preferred Partner and Reseller
Certified for Connect, Control
http://aplawrence.com
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BeeOnLion

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@pcunix thanks for those tips I have just switched on the default SORBS DNSBL & SpamCop with a score increase of 2 in the bLacklist. Hopefully this will reduce some of the spam

That wiki list is very handy! Can you advise which if any of the others i should add or how i would go about finding which is sending the most to our accounts?

Thanks again for all the advice
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pcunix

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BeeOnLion wrote on Mon, 21 May 2012 09:17
<_at_>pcunix thanks for those tips I have just switched on the default SORBS DNSBL & SpamCop with a score increase of 2 in the bLacklist. Hopefully this will reduce some of the spam

That wiki list is very handy! Can you advise which if any of the others i should add or how i would go about finding which is sending the most to our accounts?

Thanks again for all the advice


None of them are sending anything - that list is people who offer additional blacklist servers you can add to your Kerio configuration.

I can't tell you which ones will work best for you. Try one or two and look in your messages to see what they hit and what they don't - everybody's spam burden is different.

[Updated on: Mon, 21 May 2012 15:28]


Tony Lawrence
Kerio Preferred Partner and Reseller
Certified for Connect, Control
http://aplawrence.com
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BeeOnLion

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@pcunix thanks again for getting back on this I will have a look at configuring some of these & see what my messages are hitting.

Thanks again for all the help guys so far we have managed to reduce that iphone spam from 12-15 spam emails a day to 2'ish a day getting there Smile hopefully with the above we will be able to have everything tightened up.
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Pavel Dobry (Kerio)

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BeeOnLion wrote on Mon, 21 May 2012 13:24
However we are still getting some spam getting through to the iPhone & not to the webmail.

This is very unlikely and technically impossible. You cannot see an email on iPhone and not in Webmail. Unless you have an another email account on the iPhone.
pcunix

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Of course - although earlier this week I had someone who was DELETING messages from his phone and was surprised to not find them in webmail later Smile

Tony Lawrence
Kerio Preferred Partner and Reseller
Certified for Connect, Control
http://aplawrence.com
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