Somebody is (apparently) running LogSat's Software ESMTP and tries to send us mail. We do SMTP callbacks to check the sender address. The LogSat server sends a completely bogus error message ("521 That ,is not NULL,impersonated, or violates our policy.......") and then our server is refusing the mail.

What is happening? Is that LogSat server wrongly configured? Does it need to be upgraded? It is not our problem, but maybe the postmaster can be advised.

Rob

Nov 12 10:44:04 firewall smtpd[4019]: <<< MAIL FROM: SIZE=2598 Nov 12 10:44:04 firewall smtpd[4019]: vrfy: connect mickey.grontmij.net [212.26.212.131] Nov 12 10:44:04 firewall smtpd[4019]: <-- 220 mickey.grontmij.net Welcome to LogSat's Software ESMTP Server v1.1.2.124 Nov 12 10:44:04 firewall smtpd[4019]: --> EHLO uw.nl Nov 12 10:44:04 firewall smtpd[4019]: <-- 250-AUTH LOGIN Nov 12 10:44:04 firewall smtpd[4019]: <-- 250-8BITMIME Nov 12 10:44:04 firewall smtpd[4019]: <-- 250 HELP Nov 12 10:44:04 firewall smtpd[4019]: --> MAIL FROM:<> Nov 12 10:44:04 firewall smtpd[4019]: <-- 250 Address Okay Nov 12 10:44:04 firewall smtpd[4019]: --> RCPT TO: Nov 12 10:44:04 firewall smtpd[4019]: <-- 521 That ,is not NULL,impersonated, or violates our policy....... Nov 12 10:44:04 firewall smtpd[4019]: --> QUIT Nov 12 10:44:04 firewall smtpd[4019]: >>> 550 5.1.8 Source address arnold.nieuwendijk@grontmij.nl cannot be verified - mail not accepted

 

--- well we just called and everything is fine.

however the fact that my domains are impersonated by the sober virus, and by spammers,

is bad news for all of us....

the thought was : you must be compatible with your customers, they use old and buggy software, sometimes your it management forces you to use old or buggy software...

that`s bad... if you consider that rob of uw.nl, and i really know what to do....,

and how to avoid spam and configure mailservers....

it`s a hell of a job.

-eric-