Here I connect with telnet from the internet side:

Aug 19 13:25:42 arno-work postfix/smtpd[16215]: connect from unknown[212.4.33.207]
Aug 19 13:26:05 arno-work postfix/trivial-rewrite[16232]: warning: do not list domain navega.ec in BOTH mydestination and virtual_alias_domains
Aug 19 13:26:05 arno-work postfix/smtpd[16215]: 82BC87A089C: client=unknown[212.4.33.207]
Aug 19 13:26:30 arno-work postfix/cleanup[16233]: 82BC87A089C: message-id=<>
Aug 19 13:26:30 arno-work postfix/qmgr[19141]: 82BC87A089C: from=<arno@mail.navega.ec>, size=223, nrcpt=1 (queue active)
Aug 19 13:26:31 arno-work postfix/smtp[16235]: 82BC87A089C: to=<arnotixe@gmail.com>, orig_to=<arno@navega.ec>, relay=smtp.telmex.com.ec[200.124.247.251]:25, delay=33, delays=32/0.03/0.21/0.25, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as B53541718069)
Aug 19 13:26:31 arno-work postfix/qmgr[19141]: 82BC87A089C: removed

the mail is effictively forwarded to my gmail accont, instantly.



Here mail comes in, sent from my normal email client (via google's smtp service)
Aug 19 13:29:06 arno-work postfix/smtpd[16336]: connect from mail-gw0-f52.google.com[74.125.83.52]
Aug 19 13:29:06 arno-work postfix/trivial-rewrite[16232]: warning: do not list domain navega.ec in BOTH mydestination and virtual_alias_domains
Aug 19 13:29:06 arno-work postfix/smtpd[16336]: C3DF07A089C: client=mail-gw0-f52.google.com[74.125.83.52]
Aug 19 13:29:07 arno-work postfix/cleanup[16344]: C3DF07A089C: message-id=<1282242540.18745.158.camel@arno-work>
Aug 19 13:29:07 arno-work postfix/qmgr[19141]: C3DF07A089C: from=<arnotixe@gmail.com>, size=2422, nrcpt=1 (queue active)
Aug 19 13:29:07 arno-work postfix/smtp[16345]: C3DF07A089C: to=<arnotixe@gmail.com>, orig_to=<arno@navega.ec>, relay=smtp.telmex.com.ec[200.124.247.251]:25, delay=0.71, delays=0.6/0.01/0.06/0.05, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as AAB0F1718013)
Aug 19 13:29:07 arno-work postfix/qmgr[19141]: C3DF07A089C: removed
Aug 19 13:29:37 arno-work postfix/smtpd[16336]: disconnect from mail-gw0-f52.google.com[74.125.83.52]

the mail seems to not being forwarded to my gmail accont.