Sahil Tandon wrote:

email to the SA mailing list, I receive sender address verification requests from:
chlothar.bnv-bamberg.de
sam.metaphysis.net

Looking in our recent logs I can't see any SAV checks from them, but I do see connections from both hosts where they send a MAIL FROM but no RCPT TO.

It's possible that they're checking if *we* do SAV at MAIL FROM. Or maybe they are just checking if we're willing to accept mail from <[EMAIL PROTECTED]> and <[EMAIL PROTECTED]>.

> sam.metaphysis.net

That system seems to be doing some sort of testing:

/var/log/maillog.3.bz2:Jun 14 16:55:02 chip mimedefang.pl[171]: m5EEt1Ld004251: mdstats;reject;unknown_user;<[EMAIL PROTECTED]>,
[10.0.6.11];85.10.207.80;sam.metaphysis.net;sam.metaphysis.net;<[EMAIL 
PROTECTED]>;<[EMAIL PROTECTED]>

It's possible that they are checking if *we* are a backscatter source. Otherwise I've no idea why they are trying to send to that (unexistant) address.

Regards
/Jonas
--
Jonas Eckerman, FSDB & Fruktträdet
http://whatever.frukt.org/
http://www.fsdb.org/
http://www.frukt.org/

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