[Postfix-es] Problemas con el smtp

[wadoska]

¿Alguien tiene alguna idea de porque se pueden producir estos
Connection timed out?

Feb  8 08:51:00 gate popper[8120]: Stats: user1 0 0 0 0 gate
172.20.1.1 [pop_updt.c:296]
Feb  8 08:51:01 gate postfix/smtp[6127]: connect to
smtp185.google.com[64.233.185.27]: Connection timed out (port 26)Feb 
8 08:51:01 gate postfix/smtp[6128]: connect to
gsmtp171.google.com[64.233.171.27]: Connection timed out (port 26)Feb 
8 08:51:01 gate postfix/smtp[6122]: connect to
gsmtp185.google.com[64.233.185.27]: Connection timed out (port 26)Feb 
8 Feb  8 08:51:31 gate postfix/smtp[6127]: connect to
gsmtp57.google.com[216.239.57.27]: Connection timed out (port 26)
Feb  8 08:51:31 gate postfix/smtp[6128]: connect to
gsmtp57.google.com[216.239.57.27]: Connection timed out (port 26)
Feb  8 08:51:31 gate postfix/smtp[6122]: connect to
gsmtp57.google.com[216.239.57.27]: Connection timed out (port 26)
Feb  8 08:51:31 gate postfix/smtp[6122]: 5C34E28DB3:
to=<wadoska en gmail.com>, relay=none, delay=991, status=deferred
(connect to gsmtp57.google.com[216.239.57.27]: Connection timed out)
Feb  8 08:51:31 gate postfix/smtp[6128]: 65F1A28DB6:
to=<wadoska en gmail.com>, relay=none, delay=475, status=deferred
(connect to gsmtp57.google.com[216.239.57.27]: Connection timed out)
Feb  8 08:51:31 gate postfix/smtp[6127]: 51D6922D43:
to=<wadoska en gmail.com>, relay=none, delay=3545, status=deferred
(connect to gsmtp57.google.com[216.239.57.27]: Connection timed out)


Gracias de antemano, 
Y un saludo,
wadoska