sendmail und SMTP-AUTscH
Hi List, I tried to get two sendmails working together but failed. What did I do wrong? Server A (LAN) is a SuSE 8.0 box with sendmail 8.12.3. It collects mail from the LAN without problems and can deliver them to other servers. If it weren't for SPAM-control of other servers... Server B is a SuSE 7.2 root-server with sendmail-tls (latest patches implemented). This box should become my relay for all mails from the LAN. If I send mail from my kmail-program, I can use authentication methods plain and login without problems. Encryption will be the next step. I setup LAN-Server A to relay mail to root-server B (SMARTHOST=...), to use Authentication method PLAIN (SMTP_AUTH_MECHANISMS="PLAIN") and I edited the auth-info file. I double checked correct spelling of servername, username and password. I let SuSEconfig do the dirty job and restarted the server - all corresponding to the article in the SDB. It simply doesn't work here! Regardless of the authentication method, every try ends up with an "authentication failed". I installed a SuSE 8.1 sendmail also but got the same result. To sum it up: kmail -> sendmail-tls works while sendmail -> sendmail-tls does not! Any hints and tipps greatly appreciated - thank You Roland Hilkenbach
Hi List, I tried to get two sendmails working together but failed. What did I do wrong? Server A (LAN) is a SuSE 8.0 box with sendmail 8.12.3. It collects mail from the LAN without problems and can deliver them to other servers. If it weren't for SPAM-control of other servers... Server B is a SuSE 7.2 root-server with sendmail-tls (latest patches implemented). This box should become my relay for all mails from the LAN. If I send mail from my kmail-program, I can use authentication methods plain and login without problems. Encryption will be the next step. This is only the technique, I don't use sendmail any mor since years! We have a setup with two Mailservers: A postfix/ B Exchange. A = mail relay gateway and virus scanner B = internal messaging system A collects external mails, sends them to B after virus scanning. B is only for local delivery and uses A as smarthost (B is firewalled, cannot be accessed from external). The headers of mails from B to A are rewritten to come from A. I setup LAN-Server A to relay mail to root-server B (SMARTHOST=...), to use Authentication method PLAIN (SMTP_AUTH_MECHANISMS="PLAIN") and I edited the auth-info file. I double checked correct spelling of servername, username and password. I let SuSEconfig do the dirty job and restarted the server - all corresponding to the article in the SDB. It simply doesn't work here! Regardless of the authentication method, every try ends up with an "authentication failed". I installed a SuSE 8.1 sendmail also but got the same result. To sum it up: kmail -> sendmail-tls works while sendmail -> sendmail-tls does not! Normally - even with sendmail - you don't need any authentification from server A to B! Your internal server only forwards mails and the external server is only a relay server. Hopefully you made backups of the unchanged config files? Configure Server B to forward all mails to Server A (smarthost). Configure Server A to accept all relayed mails from your domain or IP-range or the mailserver B. If possible make a header rewrite of all mails leaving Server A (if your lan is firewalled mails will not come through to Server B except it is in a dmz). This might be done with domain masquerading in sendmail (CM). If you want to get mails from external to internal server change the mailrouting in mailertable. Philippe P.S.: Never let SuSEconfig do work, after you did changes by hand they might get overwritten! Use Yast and SuSEconfig or change things by hand without SuSEconfig!
Am Mittwoch, 23. April 2003 19:43 schrieb Philippe Vogel:
Hi List, I tried to get two sendmails working together but failed. What did I do wrong?
Server A (LAN) is a SuSE 8.0 box with sendmail 8.12.3. It collects mail from the LAN without problems and can deliver them to other servers. If it weren't for SPAM-control of other servers...
Server B is a SuSE 7.2 root-server with sendmail-tls (latest patches implemented). This box should become my relay for all mails from the LAN. If I send mail from my kmail-program, I can use authentication methods plain and login without problems. Encryption will be the next step.
This is only the technique, I don't use sendmail any mor since years!
We have a setup with two Mailservers: A postfix/ B Exchange.
A = mail relay gateway and virus scanner B = internal messaging system
A collects external mails, sends them to B after virus scanning. B is only for local delivery and uses A as smarthost (B is firewalled, cannot be accessed from external). The headers of mails from B to A are rewritten to come from A.
I setup LAN-Server A to relay mail to root-server B (SMARTHOST=...), to use Authentication method PLAIN (SMTP_AUTH_MECHANISMS="PLAIN") and I edited the auth-info file. I double checked correct spelling of servername, username and password. I let SuSEconfig do the dirty job and restarted the server - all corresponding to the article in the SDB. It simply doesn't work here! Regardless of the authentication method, every try ends up with an "authentication failed". I installed a SuSE 8.1 sendmail also but got the same result.
To sum it up: kmail -> sendmail-tls works while sendmail -> sendmail-tls does not!
Normally - even with sendmail - you don't need any authentification from server A to B! Your internal server only forwards mails and the external server is only a relay server.
My Root-Server is accessible from the whole Internet, so I don't dare working with plain SMTP for relaying, whereas the LAN-Box is connected to the Internet via T-Online dialup and thus with dynamic IP-Address.
Hopefully you made backups of the unchanged config files?
Sure ;-)
Configure Server B to forward all mails to Server A (smarthost).
done
Configure Server A to accept all relayed mails from your domain or IP-range or the mailserver B. If possible make a header rewrite of all mails leaving Server A (if your lan is firewalled mails will not come through to Server B except it is in a dmz). This might be done with domain masquerading in sendmail (CM).
As said above, LAN is behind a dialup-line with dynamic IP. So I have to get up early in the morning to allow relaying for the IP-Address of the day - I thought, SMTP-AUTH would be a better way ;-)
If you want to get mails from external to internal server change the mailrouting in mailertable.
Philippe
P.S.: Never let SuSEconfig do work, after you did changes by hand they might get overwritten! Use Yast and SuSEconfig or change things by hand without SuSEconfig!
Right! But I installed fresh configured boxes for the test, so I can use SuSEconfig without any trouble to bring the whole setup to work. Are there any other suggestions beside switching to postfix/exchange??? Bye - Roland
Hi list, some etherealing revealed the difference between the working connection kmail -> sendmail and the not working sendmail -> sendmail connection. And the difference was striking: In the file /etc/mail/auth/auth-info the password has to be supplied in the "encrypted" (Base64?) form! I did not read any hint about this and I think it would be nice to add this remark to the HowTo in the SDB. Now the connection works as desired... Bye Roland
participants (2)
-
Philippe Vogel -
Roland Hilkenbach