Spam Filter ISP Forums : Not a Spam Filter Issue, but MX https://www.logsat.com/spamfilter/forums/ Mon, 13 Jul 2026 02:15:42 +0000 Sat, 04 Sep 2010 04:15:03 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.04 360 https://www.logsat.com/spamfilter/forums/RSS_post_feed.asp?TID=6872 <![CDATA[Spam Filter ISP Forums]]> https://www.logsat.com/spamfilter/forums/forum_images/web_wiz_forums.png https://www.logsat.com/spamfilter/forums/ <![CDATA[Not a Spam Filter Issue, but MX : The servers do not need to be...]]> https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=6872&PID=13791&title=not-a-spam-filter-issue-but-mx#13791 Author: yapadu
Subject: 6872
Posted: 04 September 2010 at 4:15am

The servers do not need to be listed in your MX records.  You can have 1 server listed in the MX records and all your outbound email going through different servers.  If you have say 5 servers you use for outbound email you need to specify them in your SPF records (if you publish SPF records).

The fact that they are not listed in your MX records is fine.  MX records tell where to send email, SPF records tell where mail is sent from.
]]> Sat, 04 Sep 2010 04:15:03 +0000 https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=6872&PID=13791&title=not-a-spam-filter-issue-but-mx#13791 <![CDATA[Not a Spam Filter Issue, but MX : Right THe outbound server IS...]]> https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=6872&PID=13790&title=not-a-spam-filter-issue-but-mx#13790 Author: ebtsup
Subject: 6872
Posted: 03 September 2010 at 4:17pm

Right
THe outbound server IS included in the SPF framework, but is not in the MX listing, could the be a problem ?  As matter-of-fact several outbound servers are listed in the SPF, but they are not listed in the MX records; because we have the MX pointed to SpamFilter server... so I am just concerned about not being listed in the MX.
]]> Fri, 03 Sep 2010 16:17:57 +0000 https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=6872&PID=13790&title=not-a-spam-filter-issue-but-mx#13790 <![CDATA[Not a Spam Filter Issue, but MX : I&#039;m afraid so. If you publish...]]> https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=6872&PID=13789&title=not-a-spam-filter-issue-but-mx#13789 Author: LogSat
Subject: 6872
Posted: 03 September 2010 at 4:04pm

I'm afraid so. If you publish an SPF record, you will need to specify which SMTP servers are authorized to send email from your domain (@mydomain.com). If the users will be relaying thru one of your secondary servers listed in the MX records, they too will need to be specified in the SPF record. If not, other antispam filter will see emails from your domain being sent from an IP that is not allowed to do so by your SPF record, and will thus reject those emails.]]> Fri, 03 Sep 2010 16:04:47 +0000 https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=6872&PID=13789&title=not-a-spam-filter-issue-but-mx#13789 <![CDATA[Not a Spam Filter Issue, but MX : We are using spamfilter as our...]]> https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=6872&PID=13788&title=not-a-spam-filter-issue-but-mx#13788 Author: ebtsup
Subject: 6872
Posted: 03 September 2010 at 2:37pm

We are using spamfilter  as our primary MX record.

We have two other MX records as well, only for backup.
SO,
  MX  spamfilter.mydomain.com   pri=10
  MX  otherfilter.mydomain.com   pri=80
  MX  last-resort.mydomain.com  pri=90
However, when the users send out email, they go through another server that is not in the MX lookup.   When we built the SPF, this 'outbound only' email server - is included.

My quetion is: would this create problems for ourselves (or sending email users) - when other spam filters do an MX lookup, and not find the sending server there?
]]> Fri, 03 Sep 2010 14:37:54 +0000 https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=6872&PID=13788&title=not-a-spam-filter-issue-but-mx#13788