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deanpence
Apprentice
Joined: 08 Nov 2004
Posts: 158
Location: Earth
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 Posted: Tue Mar 07, 2006 3:29 pm Post subject: qmail is an open relay |
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I'm using the stock mail-mta/qmail install with only the ssl USE flag enabled. I have it configured such that the environment variable RELAYCLIENT is only set for remote IPs of 127.0.0.1 and 192.168.1.*, but I'm pretty sure someone externally is using it as an open relay. I get bounces from strange email addresses, and the best proof of all: Since I use recordio to run qmail-smtpd, I see all the traffic, and I see lots of emails being sent that I did not send.
Does gentoo's qmail (i.e., qmail with all of the patches gentoo includes) work the way it's supposed to? Does it refuse to relay unless the RELAYCLIENT environment variable is set? |
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hegga
Apprentice
Joined: 04 Jun 2003
Posts: 210
Location: Norway
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| Posted: Fri Apr 07, 2006 6:35 pm Post subject: Re: qmail is an open relay |
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| deanpence wrote: | I'm using the stock mail-mta/qmail install with only the ssl USE flag enabled. I have it configured such that the environment variable RELAYCLIENT is only set for remote IPs of 127.0.0.1 and 192.168.1.*, but I'm pretty sure someone externally is using it as an open relay. I get bounces from strange email addresses, and the best proof of all: Since I use recordio to run qmail-smtpd, I see all the traffic, and I see lots of emails being sent that I did not send.
Does gentoo's qmail (i.e., qmail with all of the patches gentoo includes) work the way it's supposed to? Does it refuse to relay unless the RELAYCLIENT environment variable is set? |
what does your rcpthosts file say?
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hegga |
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deanpence
Apprentice
Joined: 08 Nov 2004
Posts: 158
Location: Earth
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| Posted: Fri Apr 07, 2006 8:41 pm Post subject: Re: qmail is an open relay |
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| hegga wrote: | | what does your rcpthosts file say? |
"olympos.local" is my internal domain name; [deleted].homeip.net is my external hostname. "kronos" and "kaos" are two hosts on my network.
| Code: | olympos.local
.olympos.local
mail.olympos.local
[deleted].homeip.net
.[deleted].homeip.net
kronos.[deleted].homeip.net
kaos.[deleted].homeip.net |
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hegga
Apprentice
Joined: 04 Jun 2003
Posts: 210
Location: Norway
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Networking & Security
