On Mon, March 11, 2013 04:52, Tilman Schmidt wrote: > Am 11.03.2013 03:54, schrieb Austin Einter: >> I am planning to setup mail server for my domain. >> >> Which one is preferred postfix or sendmail. > Postfix. I have been running Sendmail from version 8.6 in 1995 on HP-UX 9.02 to 8.13 at the present on CentOS-5.9 as these were the default MTA's shipped by the vendor. When RHEL-6 switched from Sendmail to Postfix I decided to bite the bullet and change my public MX servers to Postfix as and when I upgraded them to CentOS-6. This was not without difficulty and unhappiness, for I miss the command line email trace facility that Sendmail provides out of the box, but it was not traumatic either. The main benefit to using Postfix over Sendmail is that Postfix definitely places a lower intellectual load on its administrators. For that reason alone I would recommend it over Sendmail. While M4 macros take most of the arcana out of Sendmail's configuration files they are no where near as easy to understand as Postfix's simple config files. The only 'rule' I have to suggest is: The mail server host and all of its MX records must resolve to a DNS 'A" or 'AAAA' record. Do not use CNAME records with any MX host or you will learn why not to do this the hard way. -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB at Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3