You can use both on lab, but there are some thoughts:

use second method if you need simple any-to-any smtp inspection on custom ports 
for new custom policy-map (inspect esmtp included in default global policy);

in first case you will be easier to specify an inspection policy for particular 
smtp server, like this:

access-list SMTP permit tcp any host 1.1.1.1 eq smtp
class-map SMTP
match access-list SMTP

Best regards,
Andrey

--
Andrey Klyuchka :: CCIE #30274 (Security)
Twitter: http://twitter.com/bitstriker
LinkedIn: http://kz.linkedin.com/in/andreyklyuchka



On Dec 23, 2011, at 3:44 PM, Piotr Tokarzewski wrote:

> Hi all,
>  
> Is there any difference between this two:
>  
> access-list SMTP permit tcp any any eq smtp
> class-map SMTP
>  match access-list SMTP
>  
> and
>  
> class-map SMTP
>  match port tcp smtp
>  
>  
> Which one we should use on exam
>  
> Thanks
> Piotr
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