Here is what we did. We turned on auth for our Imail on port 25. At the same time, we told our firewall to redirect inbound port 2525 on a different IP address to port 25 on our mail server. What this means is that while all external inbound email from servers is and will continue to get in directly on port 25, our users that 'roam' simply change the smtp port in outlook to 2525 and enable auth. Cox doesn't block it, SBC doesn't, ATT doesn't, etc etc. (And they won't) Basically it is an end-run around the port 25 thing (which I actually support the big ISPs doing since it cuts down on the direct-to-mx spammage).
************* Dave Heritage Dave at onx dot cc ************* -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dave Riddle Sent: Sunday, June 20, 2004 1:32 AM To: [EMAIL PROTECTED] Subject: Re: [IMail Forum] SMTP Auth question Most of our users that need to move back and forth between their office and their home could care less about checking their home email as they have a personal system at home for that purpose. Rather they are using their notebooks to continue to access their business email and need to be communicating with it. Be that sitting in their office, sitting in their home or sitting in a hotel. The policy that ISP's like Cox are doing to block port 25, while understandable, is stupid. Also most of our users (and almost none of our direct clients) use Outlook (most refuse to use it because of the issues with Outlook Virues and Worms - what the "media" incorrectly refer to as email virues and worms, and those that do don't want to bounce back and forth between multiple "profiles". They have an email account and they want to use it. But this discussion has not really answered the question. I guess I'll have to switch the SMTP settings this weekend and try it since traffic will probably be light with minimal potential for causing users issues while I play with it. At 09:43 PM 6/19/2004, you wrote: >Actually I understood the issue perfectly, and using Outlook and two >accounts is a lot easier than the poor user reconfiguring every time >they change locations (daily?) plus they aren't forging themselves if >they use the account available to them. Outlook has a nice drop down >letting you pick which account to use with each message, so if user at >home they pick their ISP account. No reconfiguration required. > >Encouraging them to forge their sender address when not using the >company mail server is not a good idea. > >Chris > >----- Original Message ----- >From: John Tolmachoff (Lists) >To: [EMAIL PROTECTED] >Sent: Saturday, June 19, 2004 4:20 PM >Subject: RE: [IMail Forum] SMTP Auth question > > > > Typically such users (work and home laptop toters) already, or > > would, have >two mail > > accounts configured in their mail client because they're probably > > already piping their personal mail through their home ISP >and > > running biz mail through your server when they can get to it (and > > running it through the home ISP when they can't). All they >have to do > > is set 'Server Requires Auth' on the mail account that's configured > > for your server...what they do with their ISP >mail account > > settings is between them and their ISP. Those that can reach your > > server from outside still would use it. > >You missed/don't understand the issue. > >Company user using his company e-mail for company business, while out >of the office, can not send company e-mail out through port 25 other >than to/through the ISP mail server. During this time, he has to >reconfigure his company e-mail account to send outgoing company e-mail >through the ISP e-mail server, or else it does not get delivered. > >John Tolmachoff >Engineer/Consultant/Owner >eServices For You > > > >To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html >List Archive: >http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ >Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ > > >To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html >List Archive: >http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ >Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
