[CentOS] sendmail sending out on port 587

Jobst Schmalenbach jobst at barrett.com.au
Sun Mar 21 22:21:21 UTC 2010

Install dovecot on the server.
Use firewall rules to block out all networks for 993 BUT
the network of your laptop (whatever ISP your on).
Use thunderbird (or whatever) to read you email.

I do that with all our mobiles/laptops.


On Sun, Mar 21, 2010 at 03:55:47PM -0500, Gregory P. Ennis (PoMec at PoMec.Net) wrote:
> Dear List,
> I recently spent some time out of the USA, and found myself in a hotel
> that blocked port 25 which prevented my laptop's ability to connect to
> my office mail server.  I did a scan on the internet and made the
> observation that this was a common problem.  I had port 22 available so
> I was able to get my office server set up to accept mail on 25 and 587
> without difficulty.  The command "telnet mail.server.com 587" to my
> office mail server connects without difficulty.  
> However, I have not been able to get sendmail on my laptop to connect to
> sendmail on my mail server at home using port 587.  
> I have added the following to sendmail.mc on my laptop without success :
> define(`RELAY_MAILER_ARGS', `TCP $h 587')
> define(`ESMTP_MAILER_ARGS', `TCP $h 587')
> I finally made it back home, but have decided to change my configuration
> to use 587 by default so that this problem will be avoided, but I have
> been unable to get my laptop to connect.   
> Anyone having ideas would be appreciated.
> Greg Ennis
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Bowman: Open the pod bay doors, HAL.

  | |0| |   Jobst Schmalenbach, jobst at barrett.com.au, General Manager
  | | |0|   Barrett Consulting Group P/L & The Meditation Room P/L
  |0|0|0|   +61 3 9532 7677, POBox 277, Caulfield South, 3162, Australia

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