Hello
I e-mailed the mailing list earlier on about this problem, but now I am on my computer and I have gone over my e-mail server and VPS with a fine comb and confirmed everything looks good. So, I have a problem with e-mail delivery where I can receive e-mail from some people but not others, likewise, I can send e-mail to someone people but not others- the connection times out when Postfix tries to deliver e-mail and e-mail gets deferred. Now I have included configuration details of my e-mail server and VPS. Perhaps someone might see something wrong that I can't see. This is the configuration of my e-mail server and VPS, which the e-mail server uses for a source of internet access over a PPTP virtual network tunnel... E-mail server enp0s3 interface IP address: 192.168.1.2 E-mail server ppp0 interface IP address: 192.168.2.2 VPS enp6s18 interface IP address: 1.2.3.4 E-mail server ufw raw rules: ### tuple ### allow gre any 192.168.1.2 any 1.2.3.4 in_enp0s3 -A ufw-user-input -i enp0s3 -p gre -d 192.168.1.2 -s 1.2.3.4 -j ACCEPT ### tuple ### allow tcp 25 192.168.2.2 any 0.0.0.0/0 in_ppp0 -A ufw-user-input -i ppp0 -p tcp -d 192.168.2.2 --dport 25 -j ACCEPT VPS ufw raw rules: ### tuple ### allow tcp 1723 1.2.3.4 any 0.0.0.0/0 in_enp6s18 -A ufw-user-input -i enp6s18 -p tcp -d 1.2.3.4 --dport 1723 -j ACCEPT ### tuple ### allow gre any 1.2.3.4 any 0.0.0.0/0 in_enp6s18 -A ufw-user-input -i enp6s18 -p gre -d 1.2.3.4 -j ACCEPT ### tuple ### route:allow tcp 25 192.168.2.2 any 0.0.0.0/0 in_enp6s18 -A ufw-user-forward -i enp6s18 -p tcp -d 192.168.2.2 --dport 25 -j ACCEPT ### tuple ### route:allow tcp 25 0.0.0.0/0 any 192.168.2.2 in_ppp0 -A ufw-user-forward -i ppp0 -p tcp --dport 25 -s 192.168.2.2 -j ACCEPT VPS iptables commands at boot: iptables -t nat -A PREROUTING -d 1.2.3.4 -p tcp --dport 25 -j DNAT --to 192.168.2.2 iptables -t nat -A PREROUTING -d 192.168.2.2 -p tcp --dport 25 -j DNAT --to 1.2.3.4 What could be causing my e-mail delivery problem? Sincerely, Kolusion _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
