Spam on Iphone using Active sync

cpmcomputers
cpmcomputers used Ask the Experts™
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HI Experts

I have an SBS2003 server using activesync to work with users iphone's.
Users receive lots of junk email on their iphone that does not appear in outlook 2003 on thier pc's in the office. There is no evidence of the local pc junkmail filter dealing with the offending mails.

Can someone explain how this could happen as I am unclear as to the order of junk mail filtering and how this integrates with the activesync process (if at all)
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Alan HardistyCo-Owner
Top Expert 2011

Commented:
The only way spam will get onto an iPhone via Activesync is if the mail comes from the Exchange Server.
Outlook may well move Junk messages when it is open and these will disappear from the iPhone once Outlook is opened, but if the messages are hitting the phone and the only account configured on the phone is Activesync, then the only way to eliminate the messages that are spam is to improve your anti-spam software.
If you don't have any already, I would recommend using Vamsoft ORF - www.vamsoft.com.  Brilliant software, easy to configure, small footprint and priced at $239 per server.
cpmcomputersManaging Director

Author

Commented:
Thanks for the prompt reply

Am I correct that the activsync process takes place between the actual users mailbox ( on the exchange server) and the iphone after the server side antispam processes have had their say?  Ie. any junk filtered already by spamcop,spamhaus and the microsoft IMF will have already been discarded. Therefore the only junk that can get to the iphone is that which appears in the users inbox?

Theroretically, therefore junk email that is removed by the local filter to the users junk mail folder should likewise be filtered from the iphone?

The only way this would not hold true is if the user has other mail accounts with poor (or non-existant)spam filtering on the iphone
Co-Owner
Top Expert 2011
Commented:
Yes and no.
Activesync will sync exactly what is on the Exchange server in the chosen folders.  Outlook (when open) performs additional Junk Mail filtering, so with it closed and Activesync pushing mail, the user may see more junk arriving on their phone.  If outlook is then opened, any mail deemed junk by Outlook will be moved to the Junk Mail folder if not already deleted by the user on the phone.
If the user has other mail accounts on the phone, then this will bypass any spam filtering and they will be downloading whatever makes it through to the mailbox of the server they are pulling mail from.
Follow these two threads to resolve your problem easily.

http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/Q_25665788.html?sfQueryTermInfo=1+10+30+bitmast+spam#a29932213

http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Q_24676918.html?sfQueryTermInfo=1+10+30+bitmast+spam#a25179406

The first thread is your issue but on Exchange 2007.  The second thread gives you the links for doing the same thing on Exchange 2003

Good luck!
cpmcomputersManaging Director

Author

Commented:
Thanks bitMASTERS - we already have connection filtering set up as described; thats why I posted here. Spam is not a concern on the system and Outlook appears to perform very little additional junk mail filtering.

I think that alanhardisty is correct in that the iphone users either have their own (non-corporate) email accounts and/or switch their PC's off when not in the office I will investigate further in the next few days - and post back.

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