Re: [exim] Long 'From:' header and verify = header_sender is…

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Autor: Bryan Rawlins
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A: exim-users
Assumpte: Re: [exim] Long 'From:' header and verify = header_sender issue.
On 6/23/2011 2:07 PM, W B Hacker wrote:
> It 'should' give you an in-session rejection, AND NOT cause a failure
> here (Exim 4.73, modified source, on OpenBSD 4.9 AMD-64, Exim ).

Indeed it did reject in-session. Honestly outside of the competition I
have not seen a single instance of this occurring. But we disable many
at SMTP time checks because of the way the competition works. I suspect
'in the wild' our ACL's are robust enough to prevent malformed messages
like the example from getting in.

LOG: MAIN
<= bryan.rawlins@??? U=root P=local S=141748 
id=20110622181026.J507J048OX@??? T="\367\301\333\311 
\317\302\337\321\327\314\305\316\311\321 \302\325\304\325\324 
\316\301\310\317\304\311\324\330 \314\300\304\311"
delivering 1QZoXV-0008K8-Ad
Connecting to mail.conducive.org [203.194.153.81]:25 from 172.30.0.118 
... connected
   SMTP<< 220 ESMTP Thu, 23 Jun 2011 18:22:08 +0000
   SMTP>> EHLO filtered.onlymyemail.com
   SMTP<< 250-conducive.org Hello filtered.onlymyemail.com [216.234.108.239]
          250-SIZE 2097152000
          250-COLDBEER
          250-STARTTLS
          250 HELP
   SMTP>> STARTTLS
   SMTP<< 220 TLS go ahead
   SMTP>> EHLO filtered.onlymyemail.com
   SMTP<< 250-conducive.org Hello filtered.onlymyemail.com [216.234.108.239]
          250-SIZE 2097152000
          250-COLDBEER
          250-AUTH PLAIN LOGIN
          250 HELP
   SMTP>> MAIL FROM:<bryan.rawlins@???> SIZE=143562
   SMTP<< 250 OK
   SMTP>> RCPT TO:<wbh@???>
   SMTP<< 250 Accepted
   SMTP>> DATA
   SMTP<< 354 Enter message, ending with "." on a line by itself
   SMTP>> writing message and terminating "."
   SMTP<< 550 X-Junk: Message composed incorrectly
   SMTP>> QUIT
LOG: MAIN
   ** wbh@??? R=dnslookup T=remote_smtp: SMTP error from 
remote mail server after end of data: host mail.conducive.org 
[203.194.153.81]: 550 X-Junk: Message composed incorrectly
LOG: MAIN
<= <> R=1QZoXV-0008K8-Ad U=mail P=local S=142714 T="Mail delivery 
failed: returning message to sender"
LOG: MAIN
   Completed QT=7s


--
Sincerely,
Bryan Rawlins
Systems Administrator
OnlyMyEmail, Inc. <http://www.onlymyemail.com>