OT: but Sendmail experst please help

[WILL HALSALL]

Hi all, 

I had a test message from maps regarding open relays. Our sendmail will 
accept for deliver messages of the format 
<will.halsall at hotmail.com%fcot5.farn-ct.ac.uk>  but will not accept mail for 
deliver with format <will.halsall at hotmail.com>. 

could one of the sendmail experts please explain how to stop this? below is 
the telnet session 


Thanks 


WillH 

 

ehlo fcot5.farn-ct.ac.uk
220 fcot5.farn-ct.ac.uk ESMTP Sendmail 8.13.5/8.13.5; Sat, 4 Feb 2006 
14:50:20 G
MT
250-fcot5.farn-ct.ac.uk Hello [172.16.20.43], pleased to meet you
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-8BITMIME
250-SIZE
250-DSN
250-DELIVERBY
250 HELP
250 2.1.0 <w.halsall at farn-ct.ac.uk>... Sender ok
rcpt to:<will.halsall at hotmail.com>
450 4.4.0 <will.halsall at hotmail.com>... Relaying temporarily denied. Cannot 
reso
lve PTR record for 172.16.20.43
rcpt to:<will.halsall at hotmail.com%fcot5.farn-ct.ac.uk>
250 2.1.5 <will.halsall at hotmail.com%fcot5.farn-ct.ac.uk>... Recipient ok 






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