[outages] Mimecast SMTP outage
Mike Lewinski
mlewinski at massivenetworks.com
Tue May 3 12:49:20 EDT 2022
I'm unable to reach the SMTP service on us-smtp-inbound-1.mimecast.com or us-smtp-inbound-2.mimecast.com from multiple markets: Dallas, Denver, Phoenix. I can reach them from Atlanta and Seattle. They are reachable on at least one address in Los Angeles, unreachable on others.
Dallas:
$ telnet us-smtp-inbound-1.mimecast.com 25
Trying 205.139.110.221...
Trying 207.211.30.221...
Trying 207.211.30.141...
Trying 205.139.110.141...
Trying 205.139.110.242...
Trying 207.211.30.242...
telnet: Unable to connect to remote host: Connection timed out
Denver:
$ telnet us-smtp-inbound-1.mimecast.com 25
Trying 207.211.30.221...
Trying 207.211.30.242...
Trying 207.211.30.141...
Trying 205.139.110.242...
Trying 205.139.110.221...
Trying 205.139.110.141...
telnet: Unable to connect to remote host: Connection timed out
Finally found one host in LA that worked after two failures:
$ telnet us-smtp-inbound-1.mimecast.com 25
Trying 205.139.110.221...
Trying 205.139.110.141...
Trying 207.211.30.242...
Connected to us-smtp-inbound-1.mimecast.com.
Escape character is '^]'.
220 us-smtp-1.mimecast.com ESMTP; Tue, 03 May 2022 12:38:11 -0400
QUIT
221 Service closing transmission channel [uajtgwEROGqfo99gP4hQyg.us397]
Connection closed by foreign host.
$ mtr -r -c3 -w 205.139.110.221
Start: 2022-05-03T10:43:06-0600
HOST: los-angeles Loss% Snt Last Avg Best Wrst StDev
1.|-- LA624-C6504-1-VL624.massivenetworks.net 0.0% 3 0.6 0.5 0.5 0.6 0.1
2.|-- 199.45.152.18 0.0% 3 0.4 0.4 0.4 0.4 0.0
3.|-- xe-10-0-0.edge1.LosAngeles9.Level3.net 0.0% 3 4.7 2.0 0.6 4.7 2.4
4.|-- ??? 100.0 3 0.0 0.0 0.0 0.0 0.0
5.|-- MIMECAST-SE.ear1.NewYork6.Level3.net 0.0% 3 68.8 68.8 68.7 68.8 0.1
6.|-- ??? 100.0 3 0.0 0.0 0.0 0.0 0.0
$ mtr -r -c3 -w 207.211.30.242
Start: 2022-05-03T10:47:11-0600
HOST: los-angeles Loss% Snt Last Avg Best Wrst StDev
1.|-- LA624-C6504-1-VL624.massivenetworks.net 0.0% 3 0.6 0.5 0.4 0.6 0.1
2.|-- 199.45.152.18 0.0% 3 0.4 0.4 0.4 0.5 0.1
3.|-- et-0-0-6-2.cr4-lax2.ip4.gtt.net 0.0% 3 0.4 0.5 0.4 0.6 0.1
4.|-- ae23.cr3-lax1.ip4.gtt.net 0.0% 3 1.3 1.3 1.1 1.3 0.1
5.|-- ae-3.r01.lsanca07.us.bb.gin.ntt.net 0.0% 3 1.3 1.2 1.2 1.3 0.1
6.|-- ??? 100.0 3 0.0 0.0 0.0 0.0 0.0
7.|-- ae-3.r24.snjsca04.us.bb.gin.ntt.net 33.3% 3 15.4 13.7 12.1 15.4 2.4
8.|-- ae-8.r23.chcgil09.us.bb.gin.ntt.net 0.0% 3 57.3 58.0 57.3 58.9 0.8
9.|-- ae-0.r22.chcgil09.us.bb.gin.ntt.net 0.0% 3 64.4 61.5 58.9 64.4 2.8
10.|-- ae-6.r21.nwrknj03.us.bb.gin.ntt.net 0.0% 3 69.7 71.2 69.4 74.6 2.9
11.|-- ae-11.r01.nycmny17.us.bb.gin.ntt.net 0.0% 3 70.2 70.0 69.8 70.2 0.2
12.|-- ce-0-8-0-3-200.r01.nycmny17.us.ce.gin.ntt.net 0.0% 3 74.9 87.4 74.9 112.2 21.5
13.|-- ??? 100.0 3 0.0 0.0 0.0 0.0 0.0
$
Phoenix:
$ telnet us-smtp-inbound-1.mimecast.com 25
Trying 207.211.30.141...
Trying 207.211.30.221...
Trying 205.139.110.141...
Trying 205.139.110.242...
Trying 207.211.30.242...
Trying 205.139.110.221...
telnet: Unable to connect to remote host: Connection timed out
$
Seattle:
$ telnet us-smtp-inbound-1.mimecast.com 25
Trying 207.211.30.141...
Connected to us-smtp-inbound-1.mimecast.com.
Escape character is '^]'.
220 us-smtp-1.mimecast.com ESMTP; Tue, 03 May 2022 12:34:04 -0400
QUIT
221 Service closing transmission channel [0EM41sKhMWizUnOQs3cnYQ.us479]
Connection closed by foreign host.
$ mtr -r -c3 -w us-smtp-inbound-1.mimecast.com
Start: 2022-05-03T10:37:23-0600
HOST: seattle Loss% Snt Last Avg Best Wrst StDev
1.|-- 204.144.179.129 0.0% 3 0.4 0.4 0.4 0.5 0.0
2.|-- 9-1-4.ear1.Seattle3.Level3.net 0.0% 3 0.5 0.6 0.5 0.7 0.1
3.|-- ??? 100.0 3 0.0 0.0 0.0 0.0 0.0
4.|-- MIMECAST-SE.ear1.NewYork6.Level3.net 0.0% 3 76.6 76.6 76.5 76.7 0.1
5.|-- ??? 100.0 3 0.0 0.0 0.0 0.0 0.0
$
Atlanta:
$ telnet us-smtp-inbound-1.mimecast.com 25
Trying 207.211.30.242...
Connected to us-smtp-inbound-1.mimecast.com.
Escape character is '^]'.
220 us-smtp-1.mimecast.com ESMTP; Tue, 03 May 2022 12:08:11 -0400
QUIT
221 Service closing transmission channel [M0wFRdZ-NhONlAOBhS22Sg.us227]
Connection closed by foreign host.
$ mtr 207.211.30.242 -w -r -c 3
Start: Tue May 3 10:17:58 2022
HOST: atlanta Loss% Snt Last Avg Best Wrst StDev
1.|-- Atl55-C6504-1-VL412.massivenetworks.net 0.0% 3 0.3 0.4 0.3 0.7 0.0
2.|-- 6-2-2.ear3.Atlanta2.Level3.net 0.0% 3 0.3 0.3 0.3 0.3 0.0
3.|-- 4.69.217.206 0.0% 3 17.9 7.3 1.5 17.9 9.1
4.|-- NTT-level3-100G.Atlanta2.Level3.net 0.0% 3 1.1 1.0 0.8 1.1 0.0
5.|-- ae-4.r23.atlnga05.us.bb.gin.ntt.net 0.0% 3 1.3 2.6 0.5 6.0 2.9
6.|-- ae-4.r25.asbnva02.us.bb.gin.ntt.net 0.0% 3 13.0 13.6 13.0 14.2 0.0
7.|-- ae-4.r21.nwrknj03.us.bb.gin.ntt.net 33.3% 3 18.9 18.8 18.7 18.9 0.0
8.|-- ae-11.r01.nycmny17.us.bb.gin.ntt.net 0.0% 3 19.3 19.2 19.0 19.3 0.0
9.|-- ce-0-8-0-3-200.r01.nycmny17.us.ce.gin.ntt.net 0.0% 3 24.8 24.7 24.5 24.8 0.0
10.|-- ??? 100.0 3 0.0 0.0 0.0 0.0 0.0
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