Hi I have a small mail server, with ipv6 and i relay the email to my ISP mail server. Their mail server have now ipv6, yet every time my postfix tries to connect to their server it gives timeout:
Aug 13 12:51:27 paquete postfix/smtp[25083]: SSL_connect error to smtp.sapo.pt[2001:8a0:2104:ff:212:55:154:44]:25: Connection timed out i tried to up the debug but i see nothing special: http://pastebin.com/tz5LgYLW postfix will they fallback to ipv4 and connects and deliver the emails perfectly. >From the log i can see that postfix connects fine until it runs the starttls, >then it timeout. I tried to use the gnutls to simulate the starttls in ipv6 and have no problem... i unable to find any problem neither on my end, nor on theirs. I cant use openssl to test the startssl, because it still dont support well ipv6 on the s_client. So what i'm doing wrong? is this a remote server problem? or a postfix bug in tls and ipv6? I dont see any other problem with postfix receiving emails from ipv6 servers with tls and in a few tests sending emails directly to ipv6+tls mail servers i didnt see any problem. Any help is welcome. Thanks in advanced. Best regards, higuita
