[ilugd] Postfix: Black-listing email addresses/domains

2012-03-11 Thread Gora Mohanty
Hi, Once in a while (not too frequently yet), we seem to get people probing our mail server by sending various commands on the SMTP port. I have seen no evidence of an actual issue, but what is best practice in this case? Should I be bothered enough to blacklist the domain/email address? The same

Re: [ilugd] Postfix: Black-listing email addresses/domains

2012-03-11 Thread Ashish SHUKLA
-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 Gora Mohanty writes: Hi, Once in a while (not too frequently yet), we seem to get people probing our mail server by sending various commands on the SMTP port. I have seen no evidence of an actual issue, but what is best practice in this case?

Re: [ilugd] Postfix: Black-listing email addresses/domains

2012-03-11 Thread Gora Mohanty
On 11 March 2012 21:31, Ashish SHUKLA ashish...@lostca.se wrote: [...] If you're planning to block, then maybe temporarily block or tarpit the IP address in firewall. Usually, MTAs won't do this kind of thing, only abusers. Well, true, but I would really like to at most block specific addresses

Re: [ilugd] Postfix: Black-listing email addresses/domains

2012-03-11 Thread Ashish SHUKLA
-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 Gora Mohanty writes: On 11 March 2012 21:31, Ashish SHUKLA ashish...@lostca.se wrote: [...] Or you can also use greylisting daemon, esp. spamd[1] (only works on *BSD) or postgrey/policyd (or other greylisting software) for postfix. [...]

Re: [ilugd] Postfix: Black-listing email addresses/domains

2012-03-11 Thread Raj Mathur (राज माथुर)
On Sunday 11 Mar 2012, Gora Mohanty wrote: On 11 March 2012 21:31, Ashish SHUKLA ashish...@lostca.se wrote: Or you can also use greylisting daemon, esp. spamd[1] (only works on *BSD) or postgrey/policyd (or other greylisting software) for postfix. Thank you: This looks almost exactly