[H-GEN] Mail problems

[Michael Anthon]

(Note reply-to: being general at humbug.org.au vs Michael Anthon <mca at tams.com.au>)

More info.... 

tcpdump output on a message that failed with the usual symptoms [1].  

The packet at 13:58:43.466058 contains a <CR><LF>.<CR><LF> that terminates
the DATA section of the mail FROM MSES(pippin) TO Sendmail(belial).  I guess
it is then waiting for the "220 Message Accepted..." response from Sendmail,
which it does not get (yet).  After 10 minutes (14:08:54.755939), the MSES
closes the socket and then 3 minutes later (14:11:55.989624), Sendmail sends
the "220" message.

This seems like really odd behaviour to me, why is sendmail not sending the
"220" immediately?  Is this a sendmail error?  I'm running sendmail 8.8.7 on
a 2.2.5 kernel.

If anyone wants to look at the contents of the packets, the full dump for
this connection is at ftp://tams.com.au/pub/badsmtp.dmp

Cheers
Michael A.

[1]
13:58:43.286185 pippin.tams.3130 > belial.tams.smtp: S
454179421:454179421(0) win 8192 <mss 1460> (DF)
13:58:43.286432 belial.tams.smtp > pippin.tams.3130: S
1601196279:1601196279(0) ack 454179422 win 32120 <mss 1460> (DF)
13:58:43.286738 pippin.tams.3130 > belial.tams.smtp: . ack 1 win 8760 (DF)
13:58:43.315490 belial.tams.smtp > pippin.tams.3130: P 1:84(83) ack 1 win
32120 (DF)
13:58:43.338948 pippin.tams.3130 > belial.tams.smtp: P 1:19(18) ack 84 win
8677 (DF)
13:58:43.339226 belial.tams.smtp > pippin.tams.3130: . ack 19 win 32120 (DF)
13:58:43.340998 belial.tams.smtp > pippin.tams.3130: P 84:261(177) ack 19
win 32120 (DF)
13:58:43.363604 pippin.tams.3130 > belial.tams.smtp: P 19:66(47) ack 261 win
8500 (DF)
13:58:43.376970 belial.tams.smtp > pippin.tams.3130: . ack 66 win 32120 (DF)
13:58:43.383369 belial.tams.smtp > pippin.tams.3130: P 261:297(36) ack 66
win 32120 (DF)
13:58:43.411381 pippin.tams.3130 > belial.tams.smtp: P 66:128(62) ack 297
win 8464 (DF)
13:58:43.423454 belial.tams.smtp > pippin.tams.3130: P 297:350(53) ack 128
win 32120 (DF)
13:58:43.449024 pippin.tams.3130 > belial.tams.smtp: P 128:134(6) ack 350
win 8411 (DF)
13:58:43.450706 belial.tams.smtp > pippin.tams.3130: P 350:400(50) ack 134
win 32120 (DF)
13:58:43.466058 pippin.tams.3130 > belial.tams.smtp: P 134:597(463) ack 400
win 8361 (DF)
13:58:43.476985 belial.tams.smtp > pippin.tams.3130: . ack 597 win 32120
(DF)
14:08:54.755939 pippin.tams.3130 > belial.tams.smtp: F 597:597(0) ack 400
win 8361 (DF)
14:08:54.756318 belial.tams.smtp > pippin.tams.3130: . ack 598 win 32120
(DF)
14:11:55.989624 belial.tams.smtp > pippin.tams.3130: P 400:444(44) ack 598
win 32120 (DF)
14:11:55.990001 pippin.tams.3130 > belial.tams.smtp: R
454180019:454180019(0) win 0 (DF)

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