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Re: Possible MX Lookup/Ordering Issue

From: Jorey Bump (listjoreybump.com)
Date: Thu Nov 01 2007 - 09:17:42 CDT


gordanbobich.net wrote, at 11/01/2007 09:56 AM:

> The MTA should try the MX-es in the correct order, regardless of whether
> the Additional section contains the high priority MX information or not.
> If that takes a second look-up specifically for the high priority MX, so
> be it.

You might want to explain what you're trying to accomplish with your
multiple MX records. This list is ridiculously long, and the TTLs are
far to high for an experiment. It's hard to look at the results of this
query and jump to the conclusion that Postfix is at fault:

$ dig mx bobich.net
;; Truncated, retrying in TCP mode.

; <<>> DiG 9.3.4-P1 <<>> mx bobich.net
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24305
;; flags: qr rd ra; QUERY: 1, ANSWER: 65, AUTHORITY: 2, ADDITIONAL: 4

;; QUESTION SECTION:
;bobich.net. IN MX

;; ANSWER SECTION:
bobich.net. 86287 IN MX 294
mail294.shatteredsilicon.net.
bobich.net. 86287 IN MX 295
mail295.shatteredsilicon.net.
bobich.net. 86287 IN MX 296
mail296.shatteredsilicon.net.
bobich.net. 86287 IN MX 20
mail2.shatteredsilicon.net.
bobich.net. 86287 IN MX 30
mail3.shatteredsilicon.net.
bobich.net. 86287 IN MX 40
mail4.shatteredsilicon.net.
bobich.net. 86287 IN MX 50
mail5.shatteredsilicon.net.
bobich.net. 86287 IN MX 60
mail6.shatteredsilicon.net.
bobich.net. 86287 IN MX 104
mail104.shatteredsilicon.net.
bobich.net. 86287 IN MX 105
mail105.shatteredsilicon.net.
bobich.net. 86287 IN MX 106
mail106.shatteredsilicon.net.
bobich.net. 86287 IN MX 114
mail114.shatteredsilicon.net.
bobich.net. 86287 IN MX 115
mail115.shatteredsilicon.net.
bobich.net. 86287 IN MX 116
mail116.shatteredsilicon.net.
bobich.net. 86287 IN MX 124
mail124.shatteredsilicon.net.
bobich.net. 86287 IN MX 125
mail125.shatteredsilicon.net.
bobich.net. 86287 IN MX 126
mail126.shatteredsilicon.net.
bobich.net. 86287 IN MX 134
mail134.shatteredsilicon.net.
bobich.net. 86287 IN MX 135
mail135.shatteredsilicon.net.
bobich.net. 86287 IN MX 136
mail136.shatteredsilicon.net.
bobich.net. 86287 IN MX 144
mail144.shatteredsilicon.net.
bobich.net. 86287 IN MX 145
mail145.shatteredsilicon.net.
bobich.net. 86287 IN MX 146
mail146.shatteredsilicon.net.
bobich.net. 86287 IN MX 154
mail154.shatteredsilicon.net.
bobich.net. 86287 IN MX 155
mail155.shatteredsilicon.net.
bobich.net. 86287 IN MX 156
mail156.shatteredsilicon.net.
bobich.net. 86287 IN MX 164
mail164.shatteredsilicon.net.
bobich.net. 86287 IN MX 165
mail165.shatteredsilicon.net.
bobich.net. 86287 IN MX 166
mail166.shatteredsilicon.net.
bobich.net. 86287 IN MX 174
mail174.shatteredsilicon.net.
bobich.net. 86287 IN MX 175
mail175.shatteredsilicon.net.
bobich.net. 86287 IN MX 176
mail176.shatteredsilicon.net.
bobich.net. 86287 IN MX 184
mail184.shatteredsilicon.net.
bobich.net. 86287 IN MX 185
mail185.shatteredsilicon.net.
bobich.net. 86287 IN MX 186
mail186.shatteredsilicon.net.
bobich.net. 86287 IN MX 194
mail194.shatteredsilicon.net.
bobich.net. 86287 IN MX 195
mail195.shatteredsilicon.net.
bobich.net. 86287 IN MX 196
mail196.shatteredsilicon.net.
bobich.net. 86287 IN MX 204
mail204.shatteredsilicon.net.
bobich.net. 86287 IN MX 205
mail205.shatteredsilicon.net.
bobich.net. 86287 IN MX 206
mail206.shatteredsilicon.net.
bobich.net. 86287 IN MX 214
mail214.shatteredsilicon.net.
bobich.net. 86287 IN MX 215
mail215.shatteredsilicon.net.
bobich.net. 86287 IN MX 216
mail216.shatteredsilicon.net.
bobich.net. 86287 IN MX 224
mail224.shatteredsilicon.net.
bobich.net. 86287 IN MX 225
mail225.shatteredsilicon.net.
bobich.net. 86287 IN MX 226
mail226.shatteredsilicon.net.
bobich.net. 86287 IN MX 234
mail234.shatteredsilicon.net.
bobich.net. 86287 IN MX 235
mail235.shatteredsilicon.net.
bobich.net. 86287 IN MX 236
mail236.shatteredsilicon.net.
bobich.net. 86287 IN MX 244
mail244.shatteredsilicon.net.
bobich.net. 86287 IN MX 245
mail245.shatteredsilicon.net.
bobich.net. 86287 IN MX 246
mail246.shatteredsilicon.net.
bobich.net. 86287 IN MX 254
mail254.shatteredsilicon.net.
bobich.net. 86287 IN MX 255
mail255.shatteredsilicon.net.
bobich.net. 86287 IN MX 256
mail256.shatteredsilicon.net.
bobich.net. 86287 IN MX 264
mail264.shatteredsilicon.net.
bobich.net. 86287 IN MX 265
mail265.shatteredsilicon.net.
bobich.net. 86287 IN MX 266
mail266.shatteredsilicon.net.
bobich.net. 86287 IN MX 274
mail274.shatteredsilicon.net.
bobich.net. 86287 IN MX 275
mail275.shatteredsilicon.net.
bobich.net. 86287 IN MX 276
mail276.shatteredsilicon.net.
bobich.net. 86287 IN MX 284
mail284.shatteredsilicon.net.
bobich.net. 86287 IN MX 285
mail285.shatteredsilicon.net.
bobich.net. 86287 IN MX 286
mail286.shatteredsilicon.net.

;; AUTHORITY SECTION:
bobich.net. 86287 IN NS ns2.tildeslashdot.co.uk.
bobich.net. 86287 IN NS ns1.tildeslashdot.co.uk.

;; ADDITIONAL SECTION:
mail2.shatteredsilicon.net. 86324 IN A 217.79.103.2
mail3.shatteredsilicon.net. 86333 IN A 217.79.103.3
ns1.tildeslashdot.co.uk. 86287 IN A 217.79.103.2
ns2.tildeslashdot.co.uk. 86287 IN A 64.239.2.143

;; Query time: 8 msec
;; SERVER: 192.168.1.3#53(192.168.1.3)
;; WHEN: Thu Nov 1 10:09:35 2007
;; MSG SIZE rcvd: 1714