topic intermittent mail access through PIX in Network Security https://community.cisco.com/t5/network-security/intermittent-mail-access-through-pix/m-p/760839#M1008683 <P>Hi Forum,</P><P></P><P>I have a mail server sitting inside the PIX DMZ, I have intermittent outgoing mail failure issue. For those mails that failed, I can ping the Host on the firewall, but when I tried to ping it on the mailserver, I can't ping the host. </P><P></P><P>Could it be that the PIX is blocking the access? why some mails can go through while others don't. I have rebooted the PIX but to no avail. </P><P></P><P>Thanks,</P><P>py</P> Mon, 11 Mar 2019 09:54:02 GMT paulnigel 2019-03-11T09:54:02Z intermittent mail access through PIX https://community.cisco.com/t5/network-security/intermittent-mail-access-through-pix/m-p/760839#M1008683 <P>Hi Forum,</P><P></P><P>I have a mail server sitting inside the PIX DMZ, I have intermittent outgoing mail failure issue. For those mails that failed, I can ping the Host on the firewall, but when I tried to ping it on the mailserver, I can't ping the host. </P><P></P><P>Could it be that the PIX is blocking the access? why some mails can go through while others don't. I have rebooted the PIX but to no avail. </P><P></P><P>Thanks,</P><P>py</P> Mon, 11 Mar 2019 09:54:02 GMT https://community.cisco.com/t5/network-security/intermittent-mail-access-through-pix/m-p/760839#M1008683 paulnigel 2019-03-11T09:54:02Z Re: intermittent mail access through PIX https://community.cisco.com/t5/network-security/intermittent-mail-access-through-pix/m-p/760840#M1008689 <HTML><HEAD></HEAD><BODY><P>Is this a new install, or something that used to work, and has since broke?</P><P></P><P>Also, what version of PIX software are you running.</P><P></P><P>For the ping issue, you must permit the echo-replies back in via the ACL (or enable icmp inspection) for them to get through.</P><P></P><P>David.</P></BODY></HTML> Fri, 30 Mar 2007 14:02:06 GMT https://community.cisco.com/t5/network-security/intermittent-mail-access-through-pix/m-p/760840#M1008689 David White 2007-03-30T14:02:06Z