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Old 08-16-2006, 09:41 PM   #1
Registered: Apr 2006
Distribution: SuSE, RedHat, Fedora, CentOS, BSD
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Problem in relaying outbound mails for specific smtp

Hi Guys,

I have this client, and they have a Postfix Email Server, this client wants to make all outbound mails for the domain to relay on this specific smtp server (an smtp relay server that is located on their backup ISP provider). One problem is that they do not want to relay other outbound mails such as or for this smtp.

The reason they want to do this is that Aol does not allow to accept their mails that are comming from our clients postfix server unless it comes from their smtp relay that are located in their backup ISP provider.

Any idea on how to do this?

Old 08-17-2006, 02:58 AM   #2
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Old 08-31-2006, 10:44 PM   #3
Registered: Apr 2006
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Hi acid_kewpie,

I do think that transport_maps are only used for intranet, what im trying to figure is how can i relay it in a public IP smtp relay (internet)?

Old 08-31-2006, 11:39 PM   #4
Registered: May 2003
Location: Surabaya, Jawa Timur, Indonesia
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dear gurl4sh25,

edit /etc/transport. add this line relay:[<your SMTP fqdn>]

edit add/edit this line :
transport_maps = hash:/etc/postfix/transport

adjust the path accordingly.

then run on the command prompt :
# postmap transport
# postfix reload

to check the relaying works :
send an email to while executing this line on the linux :
# tail /var/log/maillog -f

a line like this will show ( this line is example only ) :
Sep 1 11:15:31 dms postfix/smtp[28951]: 8AE51110C0A: to=<>, relay=<your SMTP fqdn>, delay=9, status=sent (250 2.0.0 k814FK7p012667 Message accepted for delivery)

It works on my PostFix.


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