OT: strange sendmail issue

[René Berber]

Chris Yuzik wrote:
[snip]
> When MOST people connect, after their mail client issues the "EHLO xxx",
> there is something that looks exactly like this:
> 
>    250-ENHANCEDSTATUSCODES
>    250-PIPELINING
>    250-8BITMIME
>    250-SIZE
>    250-DSN
>    250-AUTH DIGEST-MD5 CRAM-MD5 LOGIN PLAIN
>    250-STARTTLS
>    250-DELIVERBY
>    250 HELP
> 
> 
> But when some users connect and after their machine issues the "EHLO
> xxx", they only get this:
> 
>    250 ENHANCEDSTATUSCODES

That means they are "blacklisted", I've done it with tcp-wrappers (added the
guilty party to /etc/hosts.deny) but perhaps there are other ways to blacklist
clients (access database is another good place).
-- 
René Berber