<![CDATA[SMTP from outside LAN doesn't work]]>I have IMAP and SMTP working perfectly inside my LAN even for internet mail, but when I am at home or away, I can receive emails, but I can't send. Here are the firewall rules I have in place. 172.30.0.18 is my Exchange box.

WAN
Proto  Source  Port  Destination  Port             Gateway
TCP/UDP  *  *          172.30.0.18  25 (SMTP)           * 
TCP/UDP  *  *          172.30.0.18  143 (IMAP)        *

Thanks!

]]>https://forum.netgate.com/topic/8833/smtp-from-outside-lan-doesn-t-workRSS for NodeMon, 13 Jul 2026 22:15:28 GMTFri, 09 May 2008 21:13:32 GMT60<![CDATA[Reply to SMTP from outside LAN doesn't work on Sat, 10 May 2008 18:09:14 GMT]]>If you also configured port forwarding, yes (hint, if you haven't delete the rules and then just configure the port forwarding, that will also create the correct, matching, firewall rules).

]]>https://forum.netgate.com/post/173409https://forum.netgate.com/post/173409Sat, 10 May 2008 18:09:14 GMT<![CDATA[Reply to SMTP from outside LAN doesn't work on Sat, 10 May 2008 00:42:49 GMT]]>I checked the relays and made sure my server's ip address was in there and it was. I enabled logging and will come back to it when I get a chance. Thanks for the input. I guess you bring up the valid point that it might not be the firewall. Do I have all the rules I need setup properly?

]]>https://forum.netgate.com/post/173377https://forum.netgate.com/post/173377Sat, 10 May 2008 00:42:49 GMT<![CDATA[Reply to SMTP from outside LAN doesn't work on Fri, 09 May 2008 22:33:49 GMT]]>Right, what do the logs on your Exchange host/mail client show?

My 0.02 <currency>bet would be that you've not configured Exchange/your mail client correctly to allow for relaying outside of the local LAN.  Not having touched Exchange since the days of Exchange 5.5 though I am only guessing ;)</currency>

]]>https://forum.netgate.com/post/173373https://forum.netgate.com/post/173373Fri, 09 May 2008 22:33:49 GMT