Outlook access problem for Inside hosts

[Janardhan Meesala]

Dear Gurus,

I am using ASA 5505 firewall with base-license. I connected my firewall to one cisco 3750 switch where i created 5 vlans. I done NATing for all vlans and they able to get internet and working fine. They able to  browse all internet sites like gmail and yahoo mail.

All internal users are configured to use Outlook for their webmail. Here the problem is with outlook they are unable to send and receive the mails.

If they directly connected their system using public ip( Directly from ISP) they able to send and receive mails from outlook.

Please help me to solve the issue.

For your reference i am attaching the sh run configuration below.

Regards,

Janardhan

[Anu M Chacko]

Hi Janardhan,

What syslogs do you see on the ASA when you attempt to send mail traffic through it? To enable logging:

logging buffered 7

logging on

sh log

Regards,

Anu.

[sean_evershed]

Hi,

As a quick test you could try disabling esmtp inspection to see if that makes any difference.