patrikx3

azert kerdezem, mert smtp szervert szeretnek telepiteni, de le van blokkolva a telekom 25-os port pedig uzleti internetem van es statikus ip cim.

raadasul ipv6-on mukodik, ipv4-en meg nem, de ez valami telekon specifikus problema. szerintem

kimeno port egyaltalan nincsen tiltás, de ha másik szerveren kirpobalom mukodik a 25-os port, szoval nagyon furcsa. az a furcsa nem a bejovo 25 port van tiltva, hanem a kimeno van letiltva.

root@demona:~# telnet -4 smtp.google.com 25 Trying 108.177.15.26... ahogy mutatom, a smtp.google.com ipv4-en sem nyitja a 25 portot, csak ipv6-on

valamiert az ipv4 25 portok zarva vannak meg google-on is, csak ipv6 on tudom kinytni telnet-el a ipv6-on, masnak is volt ilyen? patrikx3@demona:~$ sudo -i Please touch the device. root@demona:~# telnet -6 corifeus.eu 25 Trying 2a01:4f8:200:4491::2... Connected to corifeus.eu. Escape character is '^]'. 220 corifeus.com ESMTP quit 221 2.0.0 Bye Connection closed by foreign host. root@demona:~# telnet -4 corifeus.eu 25 Trying 144.76.168.177... ^C root@demona:~# telnet -4 corifeus.eu 465 Trying 144.76.168.177... Connected to corifeus.eu. Escape character is '^]'. quit Connection closed by foreign host. root@demona:~# telnet -4 corifeus.eu 587 Trying 144.76.168.177... Connected to corifeus.eu. Escape character is '^]'. 220 corifeus.com ESMTP quit 221 2.0.0 Bye Connection closed by foreign host. root@demona:~# telnet -4 corifeus.eu 993 Trying 144.76.168.177... Connected to corifeus.eu. Escape character is '^]'. quit Connection closed by foreign host. root@demona:~# telnet -6 corifeus.eu 25 Trying 2a01:4f8:200:4491::2... Connected to corifeus.eu. Escape character is '^]'. 220 corifeus.com ESMTP quit 221 2.0.0 Bye Connection closed by foreign host. root@demona:~#