- Community Home
- >
- Servers and Operating Systems
- >
- Operating Systems
- >
- Operating System - HP-UX
- >
- Issue with sendmail DS and MX records
Operating System - HP-UX
1753971
Members
8432
Online
108811
Solutions
Forums
Categories
Company
Local Language
юдл
back
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Forums
Discussions
юдл
back
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Blogs
Information
Community
Resources
Community Language
Language
Forums
Blogs
Topic Options
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО06-16-2004 01:36 AM
тАО06-16-2004 01:36 AM
Issue with sendmail DS and MX records
Hi there,
Have a query on sendmail that has been annoying me for a little while now, as I can not seem to find the exact answer I am looking for.
We have several hpux hosts that when configured to use DNS, will ignore the DS (smart relay) macro and rely purely on MX records for relaying. This is causing us issues at the moment, as our customer has migrated their DNS to a Win2K/Active Directory solution, which has broken the MX records that were setup specifically for mail, and have said that they can not replicate it in this new solution.
I have found that you can "trick" sendmail into ignoring DNS altogether (change F=mDFMuX to F=0mDFMuX and remove rule to make hostname canonical), but this apparently breaks RFC's, and also causes issues with incoming email.
Is anyone else aware of this issue of the DS not working when the client uses DNS, as I hadn't come across the problem before? I could provide a lot more detail, but trying to keep it simple to start with.
Thanks,
Marc
Have a query on sendmail that has been annoying me for a little while now, as I can not seem to find the exact answer I am looking for.
We have several hpux hosts that when configured to use DNS, will ignore the DS (smart relay) macro and rely purely on MX records for relaying. This is causing us issues at the moment, as our customer has migrated their DNS to a Win2K/Active Directory solution, which has broken the MX records that were setup specifically for mail, and have said that they can not replicate it in this new solution.
I have found that you can "trick" sendmail into ignoring DNS altogether (change F=mDFMuX to F=0mDFMuX and remove rule to make hostname canonical), but this apparently breaks RFC's, and also causes issues with incoming email.
Is anyone else aware of this issue of the DS not working when the client uses DNS, as I hadn't come across the problem before? I could provide a lot more detail, but trying to keep it simple to start with.
Thanks,
Marc
2 REPLIES 2
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО06-16-2004 09:50 PM
тАО06-16-2004 09:50 PM
Re: Issue with sendmail DS and MX records
Morning, Marc
There are a couple of things to try:
Put the mail relay in brackets, like so
DS[mail.relay.com]
Recycle sendmail
If that doesn't work, use the IP address, again in brackets.
You can also try commenting out this line:
# pass to name server to make hostname canonical
# R$* < @ $* $~P > $* $: $1 < @ $[ $2 $3 $] > $4
Hope one of these works,
Berlene
There are a couple of things to try:
Put the mail relay in brackets, like so
DS[mail.relay.com]
Recycle sendmail
If that doesn't work, use the IP address, again in brackets.
You can also try commenting out this line:
# pass to name server to make hostname canonical
# R$* < @ $* $~P > $* $: $1 < @ $[ $2 $3 $] > $4
Hope one of these works,
Berlene
http://www.mindspring.com/~bkherren/dobes/index.htm
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО06-17-2004 12:37 AM
тАО06-17-2004 12:37 AM
Re: Issue with sendmail DS and MX records
I had a problem where the DNS would not match the actual ip address because the box in in-between the outside (internet), and inside lan.
I asked for help here and via hp support got an answer good enough to work.
Use the DS line with Square Brackets. I have been told this bypasses DNS. I know it works because my the ip address of the mail server from this box is completely different from DNS.
DS[1.2.3.4]
Now I suppose you can use /etc/hosts and /etc/resolv.conf and /etc/nsswitch.conf. But I didn't. Not for this. Whenever I tried using DNS, email ignored all and went straight to whatever the MX record said.
steve
I asked for help here and via hp support got an answer good enough to work.
Use the DS line with Square Brackets. I have been told this bypasses DNS. I know it works because my the ip address of the mail server from this box is completely different from DNS.
DS[1.2.3.4]
Now I suppose you can use /etc/hosts and /etc/resolv.conf and /etc/nsswitch.conf. But I didn't. Not for this. Whenever I tried using DNS, email ignored all and went straight to whatever the MX record said.
steve
The opinions expressed above are the personal opinions of the authors, not of Hewlett Packard Enterprise. By using this site, you accept the Terms of Use and Rules of Participation.
News and Events
Support
© Copyright 2024 Hewlett Packard Enterprise Development LP