MailScanner startup/Sendmail Config question

Martin.Hepworth martinh at
Tue Jun 26 17:46:17 IST 2007


See the wiki for a couple of milters that will do the job of checking
for valid email addresses.

Martin Hepworth
Snr Systems Administrator
Solid State Logic
Tel: +44 (0)1865 842300

> -----Original Message-----
> From: mailscanner-bounces at [mailto:mailscanner-
> bounces at] On Behalf Of Bryan Guest
> Sent: 26 June 2007 17:39
> To: mailscanner at
> Subject: MailScanner startup/Sendmail Config question
> Hello:
> I have a question regarding the configuration of MailScanner, in the
> it
> starts Sendmail.
> My Mail Gateway MTA's are configured like this:
> Redhat ES V4
> MailScanner 4.56.8
> ClamAv  0.90.1
> After processing, local mail is delivered to a Mail Store machine and
> non-local mail is delivered to the destination MX by the MTA.
> As I understand it, MailScanner starts Sendmail twice.  The first
> accepts mail and queues it in the inbound queue.  The second is the
> runner which delivers all mail passed through by MailScanner to the
> outbound
> queue.
> My issue is, that the first Sendmail blindly accepts mail no matter
> the
> To: address says and queue's it.  It is not doing any non-account
> processing.   This isn't appropriate for a Gateway.  I need to bounce
> invalid users with the first Sendmail, so that it doesn't get piled up
> the outbound queue where the Mail Store machine rejects it during the
> delivery attempt by the outbound queue-runner.
> In other words, since my mail is not to be delivered locally on my
> MailScanner machines, how can I configure the first sendmail to reject
> based
> on invalid To: addresses?  Has this problem not been encountered
> I should mention here that all our users are stored in LDAP.  The
> and the Mail Store are LDAP aware, so that the machines know what is a
> valid
> user and what is not.  But we are not using LDAP for mail routing at
> time.
> Any information which anyone could share on this situation would be
> appreciated.
> And many thanks to Julien and everyone on this list for all the
> Bryan Guest
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(Company No:5362730)
Registered Office: 25 Spring Hill Road, Begbroke, Oxford OX5 1RU, 
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