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-   -   Change MTA from Postfix to Sendmail in ISPConfig (

denmaus 4th July 2006 11:45

Change MTA from Postfix to Sendmail in ISPConfig

i have a working ISPConfig running, but i want to chane the MTA from Postfix to Sendmail. I found somewhere a HowTo to this, but i forgot where it was :(

I have setup Sendmail with this HowTo

Now I dont know how to configuire the Paths in ISPConfig Admin to get Sendmail worked. Default is Postfix :confused:

I heve to take Sendmail because i have several accounts on my old Server.

till 4th July 2006 11:58

One question first, why do you want to change from postfix to sendmail? Postfix is easier to configure and supports the mailbox and maildir formats that sendmail uses, so i think there is no need to switch to sendmail for old accounts?

denmaus 4th July 2006 12:52

Thanks for your reply!
I have production server (Slackware 10) with sendmail running with about 200 mailusers.

Now i am configuiring a debian system with ISPConfig because it's great in Configuration because some Users want to change own pwds and add some aliases. Now i am doing this with Webmin.

I want to copy all the users and the mailboxes to the new system so that old users can get the mails. And if a User want to create new account he ads one with ISPConfig.
So will have some old mailboxes that can not be configuired with ISPConfig and then the new mailboxes that the Users will create themself.

I am confused :( . I must migrate the mailboxes without touching original User/Pwds.

falko 5th July 2006 11:53

Postfix uses the same mailbox format as Sendmail, so you can simply copy over your old mailboxes. Also copy the appropriate entries for these users from /etc/passwd and /etc/shadow and add their domains and email addresses to /etc/postfix/local-host-names and /etc/postfix/virtusertable. Run

postmap /etc/postfix/virtusertable
/etc/init.d/postfix restart


denmaus 5th July 2006 14:17

Now all works. thank you.

denmaus 6th July 2006 23:10

helo, after hours of configuration (because i am new to postfix) now i have the following problem:

i can send mail to extern from my Outlook client.
i can not sent mail to my server, i get my mal back with error:

<>: host[] said: 554
<>: Relay access denied (in reply to RCPT TO
can you help me. i tested several solutions in the forum but nothing worked for me.

till 7th July 2006 11:54

Please post your postfix file (without comments).

falko 7th July 2006 14:04

Please check if is listed in /etc/postfix/virtusertable.

denmaus 10th July 2006 14:01

i decide to reinstall my debian system and ispconfig on it.

thanks for reply.

Have a good Day. Bye.

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