Just to recap, I changed my password at work, and made the same change to
my corporate email address account on Gmail. Some mails sent from Gmail as
skipm at trdlnk.com get where they are going, but some are rejected with
SMTP AUTH failures.
Here's one DSN I received (changing my colleague's email to "somebody" and
obfuscating the "@" sign, otherwise simply copied from the bounce message):
Delivery to the following recipient failed permanently:
somebody at trdlnk.com
Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the relay
mailhost.trdlnk.com by mailhost.trdlnk.com. [66.227.18.110].
The error that the other server returned was:
334 VXNlcm5hbWU6
334 UGFzc3dvcmQ6
535 5.7.8 Error: authentication failed: authentication failure
(SMTP AUTH failed with the remote server)
Here are a few failures as recorded by our corporate mail server:
root@scout:/var/log # grep SASL mail|grep google
2015-09-22T15:43:02.024660-05:00 scout postfix/submission/smtpd[62099]:
warning:mail-ig0-f175.google.com[209.85.213.175]: SASL LOGIN authentication
failed: authentication failure
2015-09-22T21:42:56.373276-05:00 scout postfix/submission/smtpd[29827]:
warning:mail-io0-f175.google.com[209.85.223.175]: SASL LOGIN authentication
failed: authentication failure
2015-09-23T10:20:34.821713-05:00 scout postfix/submission/smtpd[33946]:
warning:mail-io0-f178.google.com[209.85.223.178]: SASL LOGIN authentication
failed: authentication failure
And a few successes:
root@scout:/var/log # cat mail | grep google|grep sasl_method=LOGIN|grep skipm
2015-09-22T21:42:56.344812-05:00 scout postfix/submission/smtpd[29826]:
54263A1E7F: client=mail-io0-f171.google.com[209.85.223.171], sasl_method=LOGIN,
sasl_username=skipm
2015-09-23T09:00:30.956370-05:00 scout postfix/submission/smtpd[23396]:
E977EA1BC3: client=mail-ig0-f175.google.com[209.85.213.175], sasl_method=LOGIN,
sasl_username=skipm
2015-09-23T10:01:24.326404-05:00 scout postfix/submission/smtpd[30558]:
4FAB1A1BCA: client=mail-io0-f178.google.com[209.85.223.178], sasl_method=LOGIN,
sasl_username=skipm
Other people at work who also use Gmail to read their company mail have
encountered this problem at password change time as well. I went through it
the previous times I updated my password, but the problem didn't seem to
persist as long as it has this time.
Skip
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