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Firefox has stopped sending email messages even when emailing myself.

  • 21 replies
  • 1 has this problem
  • 3 views
  • Last reply by Matt

Arden Buck
Arden Buck
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I get from Thunderbird:

An error occurred while sending mail. The mail server responded: 554 5.7.1 <[email address]>: Relay access denied. Please check the message recipient "[email address]" and try again

I get from my alternate client Eudora:

SSL certificate rejected - unknown error.

Certificate: 

   Data:
       Version: 3 (0x2)
       Serial Number:
           6e:5d:32:71:32:b8:bb:48:98:9d:7a:ca:6c:42:f6:66
       Signature Algorithm: sha256WithRSAEncryption
       Issuer: OU=generated by avast! antivirus for SSL/TLS scanning, O=avast! Web/Mail Shield, CN=avast! Web/Mail Shield Root
       Validity
           Not Before: Jan  1 12:00:00 2010 GMT
           Not After : Jan  1 12:00:00 2040 GMT
       Subject: OU=generated by avast! antivirus for SSL/TLS scanning, O=avast! Web/Mail Shield, CN=avast! Web/Mail Shield Root
       Subject Public Key Info:
           Public Key Algorithm: rsaEncryption
           RSA Public Key: (2048 bit)
               Modulus (2048 bit):
                   00:e7:10:94:e9:d4:21:2b:76:38:34:a7:a7:3b:4e:
                   a7:92:94:e1:e6:46:72:14:85:2d:18:cd:55:c8:30:
                   73:1e:f2:51:1e:73:c6:2f:6c:36:96:e9:cb:1e:56:
                   92:c8:d8:15:85:4c:e4:65:8b:7b:27:1b:e0:84:9d:
                   97:9f:40:de:b2:f0:8d:6c:01:92:8a:fc:b6:62:d6:
                   48:e4:22:d5:fd:99:3a:f9:a3:33:fb:fa:7c:58:07:
                   55:9f:19:ff:9f:3a:64:dd:bd:07:d2:ed:bc:39:20:
                   51:bf:fe:ca:60:e0:cd:b1:71:d9:54:a7:ba:d1:8e:
                   d0:a0:1c:1b:d3:0c:98:05:79:d7:b1:d2:80:4b:a0:
                   c8:e2:e2:64:80:dd:58:af:d6:7c:9a:66:b0:83:b3:
                   19:76:ab:5f:ad:a6:27:3f:f1:f4:6e:72:dc:47:c0:
                   4d:b7:2a:c0:be:65:6f:3f:73:fd:4e:28:ab:e6:8c:
                   20:4b:6c:32:ce:00:bd:45:7a:1e:fa:d9:b7:57:0d:
                   5a:89:31:34:fe:22:78:8b:56:eb:57:f6:c0:e6:8d:
                   44:f1:7e:a5:2e:3c:7d:f3:ef:82:95:69:a9:6f:5d:
                   fb:e6:e2:dc:b3:1f:91:ce:20:a0:bc:b3:05:3a:8c:
                   98:61:2e:06:9e:28:cd:02:73:ae:34:0d:cb:1f:67:
                   f1:41

Email address removed. Do not post sensitive information in a public forum. See Mozilla Support rules and guidelines

I get from Thunderbird: An error occurred while sending mail. The mail server responded: 554 5.7.1 <[email address]>: Relay access denied. Please check the message recipient "[email address]" and try again I get from my alternate client Eudora: SSL certificate rejected - unknown error. Certificate: Data: Version: 3 (0x2) Serial Number: 6e:5d:32:71:32:b8:bb:48:98:9d:7a:ca:6c:42:f6:66 Signature Algorithm: sha256WithRSAEncryption Issuer: OU=generated by avast! antivirus for SSL/TLS scanning, O=avast! Web/Mail Shield, CN=avast! Web/Mail Shield Root Validity Not Before: Jan 1 12:00:00 2010 GMT Not After : Jan 1 12:00:00 2040 GMT Subject: OU=generated by avast! antivirus for SSL/TLS scanning, O=avast! Web/Mail Shield, CN=avast! Web/Mail Shield Root Subject Public Key Info: Public Key Algorithm: rsaEncryption RSA Public Key: (2048 bit) Modulus (2048 bit): 00:e7:10:94:e9:d4:21:2b:76:38:34:a7:a7:3b:4e: a7:92:94:e1:e6:46:72:14:85:2d:18:cd:55:c8:30: 73:1e:f2:51:1e:73:c6:2f:6c:36:96:e9:cb:1e:56: 92:c8:d8:15:85:4c:e4:65:8b:7b:27:1b:e0:84:9d: 97:9f:40:de:b2:f0:8d:6c:01:92:8a:fc:b6:62:d6: 48:e4:22:d5:fd:99:3a:f9:a3:33:fb:fa:7c:58:07: 55:9f:19:ff:9f:3a:64:dd:bd:07:d2:ed:bc:39:20: 51:bf:fe:ca:60:e0:cd:b1:71:d9:54:a7:ba:d1:8e: d0:a0:1c:1b:d3:0c:98:05:79:d7:b1:d2:80:4b:a0: c8:e2:e2:64:80:dd:58:af:d6:7c:9a:66:b0:83:b3: 19:76:ab:5f:ad:a6:27:3f:f1:f4:6e:72:dc:47:c0: 4d:b7:2a:c0:be:65:6f:3f:73:fd:4e:28:ab:e6:8c: 20:4b:6c:32:ce:00:bd:45:7a:1e:fa:d9:b7:57:0d: 5a:89:31:34:fe:22:78:8b:56:eb:57:f6:c0:e6:8d: 44:f1:7e:a5:2e:3c:7d:f3:ef:82:95:69:a9:6f:5d: fb:e6:e2:dc:b3:1f:91:ce:20:a0:bc:b3:05:3a:8c: 98:61:2e:06:9e:28:cd:02:73:ae:34:0d:cb:1f:67: f1:41 ''Email address removed. Do not post sensitive information in a public forum. See [[Forum rules and guidelines]]''

Modified by Andrew

All Replies (1)

Matt
Matt
  • Moderator
  • Top 10 Contributor
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disabling most anti virus product does nothing from a diagnostic point of view. some even lie about being disabled. Others disable them selves but do not remove the disabled parts from the connection process so disabling can actually make things worse in some instances.

Avast offer this for their certificates https://support.avast.com/en-ww/article/91/

I would also suggest you use the config editor to ensure the certificate store being used is still set to Thunderbird. Some anti virus product change this to the windows store. So in the config editor search for security.enterprise_roots.enabled and ensure it is set to False. (double click it in the list to change it or right click it in the list for a menu of sctions)

To do a proper test without avast I suggest you try windows safe mode.

If safe mode for the operating system fixes the issue, there's other software in your computer that's causing problems. Possibilities include but not limited to: AV scanning, virus/malware, background downloads such as program updates.
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