It works by generating a hash of the message and submitting it to Cyren. The outbreak protection component in SecurityPlus is licensed from Cyren. SecurityPlus will add layers of spam and virus filtering. Many thanks for any advice as I really need to get this spam filtering problem sorted out - I am almost inclined to go back to the multipop setup we had, because we did not have problems with any spam until I changed everything to direct mail. So I am at a bit of a loss to know whether SecurityPlus would be any more effective in cases like these emails where its short email with a link and it appears to come from someone on your address book, but in reality did not!Ĭould somebody advise on this as I am not sure how spamfilters actually block emails like these if there is no virus within the email and there is no SPF by the "sending mail server" - then how does outbreak protection help bearing in mind that this not some email spreading over the internet as two emails that I looked at appeared to come from people we actually know - so somehow our address book is being scraped as both emails were practically identical but appeared to come from different people. Is this really necessary, as I was under the impression that the spam filtering policies like PTR Lookup for HELO/EHLO, perform lookup on inbound SMTP Connections and perform lookup on domain passed in the mail command as well as SPF verification.īut for example we got several emails today, where the emails to come from person A, but is coming from somewhere else but Mdaemon cannot tell because the sending domain has no SPF setup and we currently do not prevent mail from arriving if there is no ptr record for incoming smtop connections as many mail servers that are legitimate may not have a ptr record setup.
They said that for Mdaemon spam filtering functionality to be completely effective I need to buy the Security Plus addon for Mdaemon as this provides I contacted the support people and said that I have followed their guide and yet we are still getting malware emails. Junk marketing emails are a completely separate issue altogether. However once I removed the old email service and multipop, I noticed that we were starting to get a lot more spam (as in malware, suspicious odd emails etc). Have just recently moved away from multipop (as wanted to get rid of the old email system) and use Mdaemon completely. By and Large happy with the product as its straightforward to configure and is reliable etc. I have been using Mdaemon as mail server for nearly a year.