All messages getting marked as Spam

[Alex Broens]

On 2011-03-23 1:47, Sumit Bhattacharjee wrote:
> Hello All,
>
> I have been using MailScanner for several months now and it has been working
> very well.  However, since yesterday, almost all inbound messages are
> getting marked marked as Spam.  I have the SpamAssassin threshold set to 6
> (default I believe), and following are a couple of examples of the spam
> report (email from different domains/IP's):
>
> X-cospringsitcom-MailScanner-SpamCheck: spam, SpamAssassin (not cached,
>   score=7.983, required 6, FREEMAIL_FROM 0.00, HTML_MESSAGE 0.00,
>   MIME_QP_LONG_LINE 0.00, RCVD_IN_DNSWL_NONE -0.00,
>   T_TO_NO_BRKTS_FREEMAIL 0.01, URIBL_BLACK 1.77, URIBL_RED 0.00,
>   URIBL_RHS_DOB 0.28, URIBL_SEM_FRESH 0.81, URIBL_SEM_FRESH_10 1.01,
>   URIBL_SEM_FRESH_15 4.10)
> X-cospringsitcom-MailScanner-SpamScore: 7
>
> X-cospringsitcom-MailScanner-SpamCheck: spam, SpamAssassin (not cached,
>   score=9.235, required 6, HTML_MESSAGE 0.00, RCVD_IN_DNSWL_NONE -0.00,
>   URIBL_BLACK 1.77, URIBL_RED 0.00, URIBL_RHS_DOB 0.28, URIBL_SEM 1.26,
>   URIBL_SEM_FRESH 0.81, URIBL_SEM_FRESH_10 1.01,
>   URIBL_SEM_FRESH_15 4.10, URIBL_SEM_RED 0.00)
> X-cospringsitcom-MailScanner-SpamScore: 9
>
> The commonality that I am seeing is that the URIBL_BLACK  is 1.77 for almost
> all messages and URIBL_SEM_FRESH_15 is 4.10.  But I am not sure what has
> changed (nothing should have).
>
> I'd much appreciate any debugging steps recommended by experts on this list.

either ALL your mail has blacklisted URLs in it (highly unlikely) or you 
have a DNS issue. Are you using a local resolver or your ISP's recursor?