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Headhunter123
Guru
Joined: 19 Oct 2002
Posts: 509
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 Posted: Wed Jan 21, 2004 6:46 pm Post subject: Need help with rewriting headers of my emails |
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Hi!
I am using sendmail on my linux router, to make it possible for some lan clients to send their mails over this system.
Works fine, I authentificate with my email provider's smtp server and send the mail.
But: When sendmail says HELO the the remote peer, it always HELO's using the senders local hostname and domain. (I.e: The internet mail server gets to know my local adresses).
This shouldn't be a problem, but as for example GMX and others filter out invalid sender adresses (which 192.168.115.40 indeed is on the internet  ) my mails are always regarded as spam.
Now i have learned, that sendmail can somehow rewrite the headers of my emails, so it matches somehow a resolvable domain.
How do you do this? A sendmail solution would be appreciated, though not neccessary. I'm glad if this mailsystem works, no matter with what MTA.
Please help, I'm desperated. Really! |
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Crg
Guru
Joined: 29 May 2002
Posts: 345
Location: London
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| Posted: Wed Jan 21, 2004 7:40 pm Post subject: Re: Need help with rewriting headers of my emails |
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| Headhunter123 wrote: |
How do you do this? A sendmail solution would be appreciated, though not neccessary. I'm glad if this mailsystem works, no matter with what MTA.
Please help, I'm desperated. Really!
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First starters you should be using another MTA, I would recommend postfix or exim.
In exim the name sent for the "HELO" can be set by
| Code: |
primary_hostname = domainname.com
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In exim you can also filter out other information that is sent in the headers, ie in the "lookuphost"
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lookuphost:
driver = dnslookup
domains = ! +local_domains
transport = remote_smtp
headers_remove = Received:X-Mailer:X-Originating-IP
no_more
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fleed
l33t
Joined: 28 Aug 2002
Posts: 756
Location: London
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| Posted: Thu Jan 22, 2004 3:14 pm Post subject: |
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| Just another vote: stop using sendmail. It stinks and is full of holes. It just makes it easier for your server to be rooted! |
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