Zen hosting and email

My hosting company has started using mailfoundry for blocking spam. Since this was introduced we are seeing a gradual increase in missing email, I've come across 3 in the last 3 days. Of course it may not be mailfoudry's fault.

So I need to move hosting to somewhere more reliable. Zen springs to mind. So do Zen impose any spam blocking, restrictions on email sizes, types of attachments or in any way interfere with incoming email? Do Zen limit the size of the mailbox? I don't mind stuff being tagged as spam but it has to be me my choice to reject it.

It all depends on how you intend using us for email.

If you simply buy a POP3 box from us, then yes we run AV (ClamAV) and some low-level AS (SpamAssassin + some internal blocklists). The mailbox is limited to 4G / 4000 emails and each email is limited to 128M. The SA stuff either gets rejected at a high score or tagged at the customer's disgression.

If you used cPanel, then I'd have to check. If you used a domain that we controlled then the AV/AS system still has some effect, but if you control your own domain then the cPanel system is not subject to the AV/AS mechanisms. As to limits I'd have to check for cPanel.

Thanks for the reply.

I leave mail on the server for a month. So with spam a 4000 email limit would be tight.

My problem is that we do a lot of business in Asia. I can't afford legitimate email to be blocked just because it comes from a dodgy IP address. What do your internal blocklists block?

The blocklists are based upon our experience of inbound spam, so we block based upon certain IP address and networks, and on domain names and explicit senders which have in the past caused us problem. Occasionally we get reports that we're being too harsh and may adjust the rule-set appropriately.

Thanks for your help.