smtp error failed to connect to server

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
smtp error failed to connect to server	0.23	0.6	5772	58	38
smtp	1.11	0.5	1539	15	4
error	1.64	0.7	6388	94	5
failed	0.73	0.2	1704	5	6
to	0.17	0.7	7014	65	2
connect	0.82	0.5	2252	58	7
to	0.92	0.5	7597	33	2
server	0.69	0.5	7697	18	6

Keyword	CPC	PCC	Volume	Score
smtp error failed to connect to server	1.17	0.3	517	55
unable to connect to the smtp server	1.75	0.5	4052	76
mailer error smtp connect failed	0.83	0.2	9435	95
send mail error smtp connect failed	1.75	0.7	4192	33
how to fix smtp connect failed	0.68	0.7	8703	43
connection to the outgoing smtp server failed	0.56	0.2	4556	86
cannot connect to the smtp server	1.21	0.4	8219	90
how to fix smtp server connection failing	0.84	0.4	7908	98
unable to connect to smtp host	0.26	0.8	5521	21
smtp error: could not connect to smtp host	1.16	0.1	9891	98
smtp server error message	1.27	0.4	8499	14
unable to establish smtp connection	1.11	0.2	1352	98
smtp server not connected	1.09	1	8197	39