SME Server 7.5 sau 8-probleme mail

Salut.Am si eu cateva nelamuriri.Ma joc de cateva zile cu SME Server(CentOS based) si am urmatoarea problema.Nu pot primi si trimite mail-uri.Citeva info suplimentare:
1.ISP RDS-Fiberlink.
Creeat cont pe DynDNS pt update IP sa zicem abc.ath.cx
2.Creeat domeniu free(sa zicem it-gigel.tk)
Setat la dot.tk  A it-gigel.tk ip RDS(nu ma lasa sa trec adresa abc.ath.cx), CNAME www.it-gigel.tk -abc.ath.cx, MX it-gigel.tk -abc.ath.cx
Pe server domeniul este it-gigel.tk, mail-ul mail.it-gigel.tk.
De trimis folosind portul 25 este exclus din cauza de RDS,as putea folosi smarthost smtp.rdslink.ro (am alta solutie??)
De primit insa nu pot primi deloc,de nicaieri(exceptand reteaua interna).Ce trebuie sa verific si unde?
PS la o verificare cu http://pingability.com/zoneinfo.jsp? la verificarea domeniului primesc urmatorul mesaj:

Mail Server Info
Info Type   Message  
Heads-up Your domain it-gigel.tk has only a single MX record 'ABC.ATH.CX'. If you add a secondary mail server then you will still be able to accept email if your primary mail server is unavailable.

Mail Server: ABC.ATH.CX
Server Name ABC.ATH.CX
IP 188.27.117.181
Location Romania
Mail Server For *@it-gigel.tk
MX Priority 0
Connect Response Time NA
Server 'Hello' Line
Open Relay? Not tested
RDNS Entry 188-27-117-181.rdsnet.ro.
Mail Server Info
Info Type   Message  
Error There was a problem while talking with the mail server. Got 'Socket Timeout Exception: connect timed out'

Edited by marcopolo80, 05 June 2010 - 16:49.

RDS blocheaza portul 25. Daca nu poti sa trimiti, e foarte posibil sa nu poti sa primesti. De fapt nici nu e recomandat sa trimiti email dintr-o retea rezidentiala, chiar daca portul 25 ar fi fost deschis, filtrele antispam te-ar fi blocat oricum. Iti recomand sa inchiriezi un VPS, pe care il poti folosi ca relay.

PS Verifica daca smtp-ul tau asculta pe 0.0.0.0 (netstat -lnt | grep 25) si daca nu cumva firewall-ul iti blocheaza portul 25.

[root@rosrv01 sbin]# netstat -lnt | grep 25
tcp        0      0 10.254.1.1:139              0.0.0.0:*                   LISTEN
tcp        0      0 10.254.1.1:53               0.0.0.0:*                   LISTEN
tcp        0      0 10.254.1.1:3128             0.0.0.0:*                   LISTEN
tcp        0      0 0.0.0.0:25                  0.0.0.0:*                   LISTEN

10.254.1.1 este intefata interna..
Pt mine nu este un business ci doar vreau sa invat mai mult pe partea de servere.Si cum practica este cel mai bun mod de a invata am pus pe picioare acest mic server.

Edited by marcopolo80, 05 June 2010 - 17:35.

Deci smtp-ul asculta pe toate interfetele. In acest caz putem sa presupunem ca nu primesti mesaje pt ca portul 25 este blocat de provider.

Deci inseamna ca sansele de a primi mailuri sunt aproape nule?De trimis pot trimite folosind smtp.rdslink.ro ca smarthost.

Asta vad in iptables:

[root@rosrv01 ~]# iptables -L
Chain INPUT (policy DROP)
target     prot opt source               destination
state_chk  all  --  anywhere             anywhere
local_chk  all  --  anywhere             anywhere
PPPconn    all  --  anywhere             anywhere
denylog    all  --  BASE-ADDRESS.MCAST.NET/4  anywhere
denylog    all  --  anywhere             BASE-ADDRESS.MCAST.NET/4
InboundICMP  icmp --  anywhere             anywhere
denylog    icmp --  anywhere             anywhere
InboundTCP  tcp  --  anywhere             anywhere            tcp flags:FIN,SYN,RST,ACK/SYN
denylog    tcp  --  anywhere             anywhere            tcp flags:FIN,SYN,RST,ACK/SYN
InboundUDP  udp  --  anywhere             anywhere
denylog    udp  --  anywhere             anywhere
ACCEPT     udp  --  anywhere             anywhere            udp spts:bootps:bootpc
gre-in     gre  --  anywhere             anywhere
denylog    gre  --  anywhere             anywhere
denylog    all  --  anywhere             anywhere

Chain FORWARD (policy DROP)
target     prot opt source               destination
state_chk  all  --  anywhere             anywhere
SMTPProxy  tcp  --  anywhere             anywhere            tcp dpt:smtp
local_chk  all  --  anywhere             anywhere
ForwardedTCP  tcp  --  anywhere             anywhere            tcp flags:FIN,SYN,RST,ACK/SYN
ForwardedUDP  udp  --  anywhere             anywhere
denylog    all  --  anywhere             anywhere

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination
PPPconn    all  --  anywhere             anywhere
denylog    all  --  BASE-ADDRESS.MCAST.NET/4  anywhere
denylog    all  --  anywhere             BASE-ADDRESS.MCAST.NET/4
ACCEPT     all  --  anywhere             anywhere

Chain ForwardedTCP (1 references)
target     prot opt source               destination
ForwardedTCP_3327  all  --  anywhere             anywhere
denylog    tcp  --  anywhere             anywhere            tcp flags:FIN,SYN,RST,ACK/SYN

Chain ForwardedTCP_3327 (1 references)
target     prot opt source               destination
ACCEPT     tcp  --  anywhere             pc-00200.it-gigel.tk tcp dpt:50000

Chain ForwardedUDP (1 references)
target     prot opt source               destination
ForwardedUDP_3327  all  --  anywhere             anywhere
denylog    udp  --  anywhere             anywhere

Chain ForwardedUDP_3327 (1 references)
target     prot opt source               destination
ACCEPT     udp  --  anywhere             pc-00200.it-gigel.tk udp dpt:50000

Chain InboundICMP (1 references)
target     prot opt source               destination
InboundICMP_3327  all  --  anywhere             anywhere
denylog    icmp --  anywhere             anywhere

Chain InboundICMP_3327 (1 references)
target     prot opt source               destination
ACCEPT     icmp --  anywhere             anywhere            icmp echo-request
ACCEPT     icmp --  anywhere             anywhere            icmp echo-reply
ACCEPT     icmp --  anywhere             anywhere            icmp destination-unreachable
ACCEPT     icmp --  anywhere             anywhere            icmp source-quench
ACCEPT     icmp --  anywhere             anywhere            icmp time-exceeded
ACCEPT     icmp --  anywhere             anywhere            icmp parameter-problem
denylog    all  --  anywhere             anywhere

Chain InboundTCP (1 references)
target     prot opt source               destination
InboundTCP_3327  all  --  anywhere             anywhere
denylog    tcp  --  anywhere             anywhere            tcp flags:FIN,SYN,RST,ACK/SYN

Chain InboundTCP_3327 (1 references)
target     prot opt source               destination
denylog    all  --  anywhere            !188-27-xxx-xxx.rdsnet.ro
REJECT     tcp  --  anywhere             188-27-xxx-xxx.rdsnet.ro tcp dpt:auth reject-with tcp-reset
ACCEPT     tcp  --  anywhere             188-27-xxx-xxx.rdsnet.ro tcp dpt:ftp
ACCEPT     tcp  --  anywhere             188-27-xxx-xxx.rdsnet.ro tcp dpt:http
ACCEPT     tcp  --  anywhere             188-27-xxx-xxx.rdsnet.ro tcp dpt:https
ACCEPT     tcp  --  anywhere             188-27-xxx-xxx.rdsnet.ro tcp dpt:smtp
ACCEPT     tcp  --  anywhere             188-27-xxx-xxx.rdsnet.ro tcp dpt:ssh
ACCEPT     tcp  --  anywhere             188-27-xxx-xxx.rdsnet.ro tcp dpt:smtps

Chain InboundUDP (1 references)
target     prot opt source               destination
InboundUDP_3327  all  --  anywhere             anywhere
denylog    udp  --  anywhere             anywhere

Chain InboundUDP_3327 (1 references)
target     prot opt source               destination
denylog    all  --  anywhere            !188-27-xxx-xxx.rdsnet.ro

Chain PPPconn (2 references)
target     prot opt source               destination
PPPconn_1  all  --  anywhere             anywhere

Chain PPPconn_1 (1 references)
target     prot opt source               destination

Chain SMTPProxy (1 references)
target     prot opt source               destination

Chain denylog (20 references)
target     prot opt source               destination
DROP       udp  --  anywhere             anywhere            udp dpt:router
DROP       udp  --  anywhere             anywhere            udp dpts:netbios-ns:netbios-ssn
DROP       tcp  --  anywhere             anywhere            tcp dpts:netbios-ns:netbios-ssn
ULOG       all  --  anywhere             anywhere            ULOG copy_range 0 nlgroup 1 prefix `denylog:' queue_threshold 1
DROP       all  --  anywhere             anywhere

Chain gre-in (1 references)
target     prot opt source               destination
denylog    all  --  anywhere            !188-27-xxx-xxx.rdsnet.ro
denylog    all  --  anywhere             anywhere

Chain local_chk (2 references)
target     prot opt source               destination
local_chk_3327  all  --  anywhere             anywhere

Chain local_chk_3327 (1 references)
target     prot opt source               destination
ACCEPT     all  --  anywhere             anywhere
ACCEPT     all  --  10.254.1.0/24        anywhere

Chain state_chk (2 references)
target     prot opt source               destination
ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED