#1 2019-02-05 05:05:08

sdw75
Member
Registered: 2019-02-05
Posts: 1

SMTP Issue

I hate to start another thread related to issues with the SMTP client, but I'm having a problem I can't seem to resolve.

I'm attempting to send mail using AWS WorkMail (SMTP services are provided as part of the e-mail hosting service).

Here's the error from a --check-smtp operation:

###############################################################################
#
#  (c) XSIBACKUP-PRO 11.2.3 | Backup for (c) VMWARE ESXi Hypervisor by 33hops.com
#
###################################################################################

Using stored SMTP server info...
Found conf/smtpsrvs file...
Using SMTP server 1
Open firewall: 2019-02-05T04:58:48|  Opening port 465 for SMTPout-465 service...
Plain SMTP Module ::: The e-mail server [smtp.mail.us-east-1.awsapps.com] is not reachable at port [465]
Firewall rule SMTPout-465 closed.
Killed
[root@srv3:/vmfs/volumes/5a7e15cb-8433352e-e77a-001b214c9939/xsi-dir] esxcli network firewall ruleset set --enabled true --ruleset-id SMTPout-465
[root@srv3:/vmfs/volumes/5a7e15cb-8433352e-e77a-001b214c9939/xsi-dir] nc -z smtp.mail.us-east-1.awsapps.com 465
Connection to smtp.mail.us-east-1.awsapps.com 465 port [tcp/smtps] succeeded!
[root@srv3:/vmfs/volumes/5a7e15cb-8433352e-e77a-001b214c9939/xsi-dir] esxcli network firewall ruleset set --enabled false --ruleset-id SMTPout-465

XSI is reporting that it cannot contact the SMTP server; however, clearly it can.  I'll add that two other services running in environment use the service several times a day for sending logs, so it's working and the server can in fact contact it.

I've read elsewhere that possibly XSI has deprecated SSL for e-mail, is that the case?  Amazon only supports SSL, they do not support TLS, so I'm wondering if possibly the issue isn't so much connection related as the error indicates, but actually an SSL support error?

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#2 2019-02-05 09:03:16

admin
Administrator
Registered: 2017-04-21
Posts: 1,364

Re: SMTP Issue

XSIBackup actually uses nc to probe the SMTP servers. Supposing that you are testing the server with nc from the same ESXi shell, try to tweak the timeouts at the header of the src/sendmail module.

XSIBackup never supported SSL, just TLS, so yes, that is an issue, SSL is insecure and has been deprecated by most ISPs. Use some other server.

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