----- Original Message ----- From: "Len Conrad" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, May 30, 2003 8:58 PM Subject: Re: [IMail Forum] Deny SMTP?
> > >I just setup a server running Spamassassin and updated my MX records to > >route all mail through it. However, many spammers send mail directly to my > >mail server, thus circumventing my spamfilter. > > Is Imial still in MX records as backup MX? then remove it, that little bit > of obscurity really does help. > I have removed it from the MX records. > > > I have many users who pop3 > >into my mailserver's current address so I can't change the address. > > they POP with a hostname or IP? Hostname > > But if you have been hit really hard, I suspect some spammers have your IP > address noated as "successful victim", and will spam your Imail IP directly > so removing imail hostname from MX may not be completely effective, but it > does stop spam from spammer who do follow MX records. > > > > What I > >would like to achieve is to allow ONLY my spamfilter machine to connect to > >my mailserver via SMTP while continuing to allow my users to connect via > >POP3. How is the best way to achieve this? > > block access to the Imail machine port 25 at your router, but your POP > users don't SMTP AUTH to the Imail machine? > I do not currently use SMTP AUTH. If I ever want to move to SMTP AUTH I won't be able to block it this way, will I? > In the IMail u/g, see Setting Access to the SMTP Server, to deny/grant SMTP > access. > Will do. Thank you. > Len > > _____________________________________________________________________ > http://MenAndMice.com/DNS-training: New York; Seattle > IMGate.MEIway.com: anti-spam gateway, effective on 1000's of sites, free > > > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html > List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ > --- > [This E-mail scanned for viruses by Declude Virus] > > --- [This E-mail scanned for viruses by Declude Virus] To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
